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Finding the Fourth Proportional to 5,761.38, 8,640.24 and 1,864.86

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Solution

The fourth proportional to 5,761.38, 8,640.24 and 1,864.86 is: 2,796.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,761.38 : 8,640.24 = 1,864.86 : x
  2. Step 2: Convert to fraction form
    5,761.38/8,640.24 = 1,864.86/x
  3. Step 3: Cross multiply
    5,761.38x = 8,640.24 × 1,864.86
  4. Step 4: Simplify right side
    5,761.38x = 16,112,837.97
  5. Step 5: Solve for x
    x = 16,112,837.97/5,761.38
  6. Step 6: Final answer
    x = 2,796.70

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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.