Home / 5,139.61-7,092.80-3,151.26

Finding the Fourth Proportional to 5,139.61, 7,092.80 and 3,151.26

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Solution

The fourth proportional to 5,139.61, 7,092.80 and 3,151.26 is: 4,348.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.61 : 7,092.80 = 3,151.26 : x
  2. Step 2: Convert to fraction form
    5,139.61/7,092.80 = 3,151.26/x
  3. Step 3: Cross multiply
    5,139.61x = 7,092.80 × 3,151.26
  4. Step 4: Simplify right side
    5,139.61x = 22,351,267.77
  5. Step 5: Solve for x
    x = 22,351,267.77/5,139.61
  6. Step 6: Final answer
    x = 4,348.82

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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.