Home / 5,139.26-7,092.17-2,781.40

Finding the Fourth Proportional to 5,139.26, 7,092.17 and 2,781.40

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Solution

The fourth proportional to 5,139.26, 7,092.17 and 2,781.40 is: 3,838.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.26 : 7,092.17 = 2,781.40 : x
  2. Step 2: Convert to fraction form
    5,139.26/7,092.17 = 2,781.40/x
  3. Step 3: Cross multiply
    5,139.26x = 7,092.17 × 2,781.40
  4. Step 4: Simplify right side
    5,139.26x = 19,726,156.60
  5. Step 5: Solve for x
    x = 19,726,156.60/5,139.26
  6. Step 6: Final answer
    x = 3,838.33

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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.