Home / 5,129.03-7,077.92-3,139.58

Finding the Fourth Proportional to 5,129.03, 7,077.92 and 3,139.58

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Solution

The fourth proportional to 5,129.03, 7,077.92 and 3,139.58 is: 4,332.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.03 : 7,077.92 = 3,139.58 : x
  2. Step 2: Convert to fraction form
    5,129.03/7,077.92 = 3,139.58/x
  3. Step 3: Cross multiply
    5,129.03x = 7,077.92 × 3,139.58
  4. Step 4: Simplify right side
    5,129.03x = 22,221,644.99
  5. Step 5: Solve for x
    x = 22,221,644.99/5,129.03
  6. Step 6: Final answer
    x = 4,332.53

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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.