Home / 8,428.38-11,631.16-4,702.38

Finding the Fourth Proportional to 8,428.38, 11,631.16 and 4,702.38

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Solution

The fourth proportional to 8,428.38, 11,631.16 and 4,702.38 is: 6,489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.38 : 11,631.16 = 4,702.38 : x
  2. Step 2: Convert to fraction form
    8,428.38/11,631.16 = 4,702.38/x
  3. Step 3: Cross multiply
    8,428.38x = 11,631.16 × 4,702.38
  4. Step 4: Simplify right side
    8,428.38x = 54,694,134.16
  5. Step 5: Solve for x
    x = 54,694,134.16/8,428.38
  6. Step 6: Final answer
    x = 6,489.28

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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.