Home / 5,127.71-7,691.56-2,661.86

Finding the Fourth Proportional to 5,127.71, 7,691.56 and 2,661.86

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Solution

The fourth proportional to 5,127.71, 7,691.56 and 2,661.86 is: 3,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.71 : 7,691.56 = 2,661.86 : x
  2. Step 2: Convert to fraction form
    5,127.71/7,691.56 = 2,661.86/x
  3. Step 3: Cross multiply
    5,127.71x = 7,691.56 × 2,661.86
  4. Step 4: Simplify right side
    5,127.71x = 20,473,868.48
  5. Step 5: Solve for x
    x = 20,473,868.48/5,127.71
  6. Step 6: Final answer
    x = 3,992.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.