Home / 5,139.79-7,092.92-2,781.93

Finding the Fourth Proportional to 5,139.79, 7,092.92 and 2,781.93

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Solution

The fourth proportional to 5,139.79, 7,092.92 and 2,781.93 is: 3,839.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.79 : 7,092.92 = 2,781.93 : x
  2. Step 2: Convert to fraction form
    5,139.79/7,092.92 = 2,781.93/x
  3. Step 3: Cross multiply
    5,139.79x = 7,092.92 × 2,781.93
  4. Step 4: Simplify right side
    5,139.79x = 19,732,006.94
  5. Step 5: Solve for x
    x = 19,732,006.94/5,139.79
  6. Step 6: Final answer
    x = 3,839.07

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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.