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Finding the Fourth Proportional to 5,139.59, 7,092.90 and 2,901.42

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Solution

The fourth proportional to 5,139.59, 7,092.90 and 2,901.42 is: 4,004.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.59 : 7,092.90 = 2,901.42 : x
  2. Step 2: Convert to fraction form
    5,139.59/7,092.90 = 2,901.42/x
  3. Step 3: Cross multiply
    5,139.59x = 7,092.90 × 2,901.42
  4. Step 4: Simplify right side
    5,139.59x = 20,579,481.92
  5. Step 5: Solve for x
    x = 20,579,481.92/5,139.59
  6. Step 6: Final answer
    x = 4,004.11

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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.