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Finding the Fourth Proportional to 5,615.84, 7,750.26 and 3,258.20

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Solution

The fourth proportional to 5,615.84, 7,750.26 and 3,258.20 is: 4,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.84 : 7,750.26 = 3,258.20 : x
  2. Step 2: Convert to fraction form
    5,615.84/7,750.26 = 3,258.20/x
  3. Step 3: Cross multiply
    5,615.84x = 7,750.26 × 3,258.20
  4. Step 4: Simplify right side
    5,615.84x = 25,251,858.38
  5. Step 5: Solve for x
    x = 25,251,858.38/5,615.84
  6. Step 6: Final answer
    x = 4,496.55

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Half scale
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Double scale
Find fourth proportional to 5,616.84, 7,751.64 and 3,259.20
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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.