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Finding the Fourth Proportional to 8,615.04, 11,892.69 and 6,624.90

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Solution

The fourth proportional to 8,615.04, 11,892.69 and 6,624.90 is: 9,145.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.04 : 11,892.69 = 6,624.90 : x
  2. Step 2: Convert to fraction form
    8,615.04/11,892.69 = 6,624.90/x
  3. Step 3: Cross multiply
    8,615.04x = 11,892.69 × 6,624.90
  4. Step 4: Simplify right side
    8,615.04x = 78,787,881.98
  5. Step 5: Solve for x
    x = 78,787,881.98/8,615.04
  6. Step 6: Final answer
    x = 9,145.39

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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.