Home / 5,129.15-7,079.95-3,190.36

Finding the Fourth Proportional to 5,129.15, 7,079.95 and 3,190.36

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Solution

The fourth proportional to 5,129.15, 7,079.95 and 3,190.36 is: 4,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.15 : 7,079.95 = 3,190.36 : x
  2. Step 2: Convert to fraction form
    5,129.15/7,079.95 = 3,190.36/x
  3. Step 3: Cross multiply
    5,129.15x = 7,079.95 × 3,190.36
  4. Step 4: Simplify right side
    5,129.15x = 22,587,575.57
  5. Step 5: Solve for x
    x = 22,587,575.57/5,129.15
  6. Step 6: Final answer
    x = 4,403.77

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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.