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Finding the Fourth Proportional to 9,007.04, 12,435.20 and 8,449.28

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Solution

The fourth proportional to 9,007.04, 12,435.20 and 8,449.28 is: 11,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,007.04 : 12,435.20 = 8,449.28 : x
  2. Step 2: Convert to fraction form
    9,007.04/12,435.20 = 8,449.28/x
  3. Step 3: Cross multiply
    9,007.04x = 12,435.20 × 8,449.28
  4. Step 4: Simplify right side
    9,007.04x = 105,068,486.66
  5. Step 5: Solve for x
    x = 105,068,486.66/9,007.04
  6. Step 6: Final answer
    x = 11,665.15

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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.