Home / 5,127.39-7,079.60-3,140.66

Finding the Fourth Proportional to 5,127.39, 7,079.60 and 3,140.66

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Solution

The fourth proportional to 5,127.39, 7,079.60 and 3,140.66 is: 4,336.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.39 : 7,079.60 = 3,140.66 : x
  2. Step 2: Convert to fraction form
    5,127.39/7,079.60 = 3,140.66/x
  3. Step 3: Cross multiply
    5,127.39x = 7,079.60 × 3,140.66
  4. Step 4: Simplify right side
    5,127.39x = 22,234,565.43
  5. Step 5: Solve for x
    x = 22,234,565.43/5,127.39
  6. Step 6: Final answer
    x = 4,336.43

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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.