Home / 2,247.35-3,370.28-687.42

Finding the Fourth Proportional to 2,247.35, 3,370.28 and 687.42

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Solution

The fourth proportional to 2,247.35, 3,370.28 and 687.42 is: 1,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,247.35 : 3,370.28 = 687.42 : x
  2. Step 2: Convert to fraction form
    2,247.35/3,370.28 = 687.42/x
  3. Step 3: Cross multiply
    2,247.35x = 3,370.28 × 687.42
  4. Step 4: Simplify right side
    2,247.35x = 2,316,794.44
  5. Step 5: Solve for x
    x = 2,316,794.44/2,247.35
  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.