Home / 1,612.11-2,419.38-747.03

Finding the Fourth Proportional to 1,612.11, 2,419.38 and 747.03

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Solution

The fourth proportional to 1,612.11, 2,419.38 and 747.03 is: 1,121.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.11 : 2,419.38 = 747.03 : x
  2. Step 2: Convert to fraction form
    1,612.11/2,419.38 = 747.03/x
  3. Step 3: Cross multiply
    1,612.11x = 2,419.38 × 747.03
  4. Step 4: Simplify right side
    1,612.11x = 1,807,349.44
  5. Step 5: Solve for x
    x = 1,807,349.44/1,612.11
  6. Step 6: Final answer
    x = 1,121.11

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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.