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Finding the Fourth Proportional to 8,318.72, 12,424.18 and 7,537.16

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Solution

The fourth proportional to 8,318.72, 12,424.18 and 7,537.16 is: 11,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.72 : 12,424.18 = 7,537.16 : x
  2. Step 2: Convert to fraction form
    8,318.72/12,424.18 = 7,537.16/x
  3. Step 3: Cross multiply
    8,318.72x = 12,424.18 × 7,537.16
  4. Step 4: Simplify right side
    8,318.72x = 93,643,032.53
  5. Step 5: Solve for x
    x = 93,643,032.53/8,318.72
  6. Step 6: Final answer
    x = 11,256.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.