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Finding the Fourth Proportional to 8,957.92, 13,436.52 and 3,115.84

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Solution

The fourth proportional to 8,957.92, 13,436.52 and 3,115.84 is: 4,673.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.92 : 13,436.52 = 3,115.84 : x
  2. Step 2: Convert to fraction form
    8,957.92/13,436.52 = 3,115.84/x
  3. Step 3: Cross multiply
    8,957.92x = 13,436.52 × 3,115.84
  4. Step 4: Simplify right side
    8,957.92x = 41,866,046.48
  5. Step 5: Solve for x
    x = 41,866,046.48/8,957.92
  6. Step 6: Final answer
    x = 4,673.63

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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.