Home / 5,139.55-7,092.54-2,781.70

Finding the Fourth Proportional to 5,139.55, 7,092.54 and 2,781.70

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Solution

The fourth proportional to 5,139.55, 7,092.54 and 2,781.70 is: 3,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.55 : 7,092.54 = 2,781.70 : x
  2. Step 2: Convert to fraction form
    5,139.55/7,092.54 = 2,781.70/x
  3. Step 3: Cross multiply
    5,139.55x = 7,092.54 × 2,781.70
  4. Step 4: Simplify right side
    5,139.55x = 19,729,318.52
  5. Step 5: Solve for x
    x = 19,729,318.52/5,139.55
  6. Step 6: Final answer
    x = 3,838.72

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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.