Home / 1,231.11-1,847.25-1,127.31

Finding the Fourth Proportional to 1,231.11, 1,847.25 and 1,127.31

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Solution

The fourth proportional to 1,231.11, 1,847.25 and 1,127.31 is: 1,691.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.11 : 1,847.25 = 1,127.31 : x
  2. Step 2: Convert to fraction form
    1,231.11/1,847.25 = 1,127.31/x
  3. Step 3: Cross multiply
    1,231.11x = 1,847.25 × 1,127.31
  4. Step 4: Simplify right side
    1,231.11x = 2,082,423.40
  5. Step 5: Solve for x
    x = 2,082,423.40/1,231.11
  6. Step 6: Final answer
    x = 1,691.50

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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.