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Finding the Fourth Proportional to 8,817.84, 12,168.76 and 4,839.32

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Solution

The fourth proportional to 8,817.84, 12,168.76 and 4,839.32 is: 6,678.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.84 : 12,168.76 = 4,839.32 : x
  2. Step 2: Convert to fraction form
    8,817.84/12,168.76 = 4,839.32/x
  3. Step 3: Cross multiply
    8,817.84x = 12,168.76 × 4,839.32
  4. Step 4: Simplify right side
    8,817.84x = 58,888,493.22
  5. Step 5: Solve for x
    x = 58,888,493.22/8,817.84
  6. Step 6: Final answer
    x = 6,678.34

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Find fourth proportional to 4,408.92, 6,084.38 and 2,419.66
Half scale
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Double scale
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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.