Home / 2,135.32-3,202.86-748.72

Finding the Fourth Proportional to 2,135.32, 3,202.86 and 748.72

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Solution

The fourth proportional to 2,135.32, 3,202.86 and 748.72 is: 1,123.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.32 : 3,202.86 = 748.72 : x
  2. Step 2: Convert to fraction form
    2,135.32/3,202.86 = 748.72/x
  3. Step 3: Cross multiply
    2,135.32x = 3,202.86 × 748.72
  4. Step 4: Simplify right side
    2,135.32x = 2,398,045.34
  5. Step 5: Solve for x
    x = 2,398,045.34/2,135.32
  6. Step 6: Final answer
    x = 1,123.04

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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.