Home / 2,247.12-3,370.82-687.24

Finding the Fourth Proportional to 2,247.12, 3,370.82 and 687.24

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Solution

The fourth proportional to 2,247.12, 3,370.82 and 687.24 is: 1,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,247.12 : 3,370.82 = 687.24 : x
  2. Step 2: Convert to fraction form
    2,247.12/3,370.82 = 687.24/x
  3. Step 3: Cross multiply
    2,247.12x = 3,370.82 × 687.24
  4. Step 4: Simplify right side
    2,247.12x = 2,316,558.90
  5. Step 5: Solve for x
    x = 2,316,558.90/2,247.12
  6. Step 6: Final answer
    x = 1,030.90

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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.