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Finding the Fourth Proportional to 7,645.84, 10,551.12 and 4,289.46

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Solution

The fourth proportional to 7,645.84, 10,551.12 and 4,289.46 is: 5,919.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645.84 : 10,551.12 = 4,289.46 : x
  2. Step 2: Convert to fraction form
    7,645.84/10,551.12 = 4,289.46/x
  3. Step 3: Cross multiply
    7,645.84x = 10,551.12 × 4,289.46
  4. Step 4: Simplify right side
    7,645.84x = 45,258,607.20
  5. Step 5: Solve for x
    x = 45,258,607.20/7,645.84
  6. Step 6: Final answer
    x = 5,919.38

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Find fourth proportional to 3,822.92, 5,275.56 and 2,144.73
Half scale
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Double scale
Find fourth proportional to 7,646.84, 10,552.50 and 4,290.46
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.