Home / 3,141.19-4,711.80-1,291.90

Finding the Fourth Proportional to 3,141.19, 4,711.80 and 1,291.90

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Solution

The fourth proportional to 3,141.19, 4,711.80 and 1,291.90 is: 1,937.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.19 : 4,711.80 = 1,291.90 : x
  2. Step 2: Convert to fraction form
    3,141.19/4,711.80 = 1,291.90/x
  3. Step 3: Cross multiply
    3,141.19x = 4,711.80 × 1,291.90
  4. Step 4: Simplify right side
    3,141.19x = 6,087,174.42
  5. Step 5: Solve for x
    x = 6,087,174.42/3,141.19
  6. Step 6: Final answer
    x = 1,937.86

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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.