Home / 3,128.50-4,691.68-1,049.03

Finding the Fourth Proportional to 3,128.50, 4,691.68 and 1,049.03

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Solution

The fourth proportional to 3,128.50, 4,691.68 and 1,049.03 is: 1,573.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.50 : 4,691.68 = 1,049.03 : x
  2. Step 2: Convert to fraction form
    3,128.50/4,691.68 = 1,049.03/x
  3. Step 3: Cross multiply
    3,128.50x = 4,691.68 × 1,049.03
  4. Step 4: Simplify right side
    3,128.50x = 4,921,713.07
  5. Step 5: Solve for x
    x = 4,921,713.07/3,128.50
  6. Step 6: Final answer
    x = 1,573.19

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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.