Home / 6,811.16-9,397.17-3,977.90

Finding the Fourth Proportional to 6,811.16, 9,397.17 and 3,977.90

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Solution

The fourth proportional to 6,811.16, 9,397.17 and 3,977.90 is: 5,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.16 : 9,397.17 = 3,977.90 : x
  2. Step 2: Convert to fraction form
    6,811.16/9,397.17 = 3,977.90/x
  3. Step 3: Cross multiply
    6,811.16x = 9,397.17 × 3,977.90
  4. Step 4: Simplify right side
    6,811.16x = 37,381,002.54
  5. Step 5: Solve for x
    x = 37,381,002.54/6,811.16
  6. Step 6: Final answer
    x = 5,488.20

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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.