Home / 3,086.30-4,631.31-1,139.90

Finding the Fourth Proportional to 3,086.30, 4,631.31 and 1,139.90

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Solution

The fourth proportional to 3,086.30, 4,631.31 and 1,139.90 is: 1,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.30 : 4,631.31 = 1,139.90 : x
  2. Step 2: Convert to fraction form
    3,086.30/4,631.31 = 1,139.90/x
  3. Step 3: Cross multiply
    3,086.30x = 4,631.31 × 1,139.90
  4. Step 4: Simplify right side
    3,086.30x = 5,279,230.27
  5. Step 5: Solve for x
    x = 5,279,230.27/3,086.30
  6. Step 6: Final answer
    x = 1,710.54

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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.