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Finding the Fourth Proportional to 8,972.28, 13,461.12 and 6,479.10

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Solution

The fourth proportional to 8,972.28, 13,461.12 and 6,479.10 is: 9,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.28 : 13,461.12 = 6,479.10 : x
  2. Step 2: Convert to fraction form
    8,972.28/13,461.12 = 6,479.10/x
  3. Step 3: Cross multiply
    8,972.28x = 13,461.12 × 6,479.10
  4. Step 4: Simplify right side
    8,972.28x = 87,215,942.59
  5. Step 5: Solve for x
    x = 87,215,942.59/8,972.28
  6. Step 6: Final answer
    x = 9,720.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.