Home / 1,229.27-1,704.81-1,125.47

Finding the Fourth Proportional to 1,229.27, 1,704.81 and 1,125.47

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Solution

The fourth proportional to 1,229.27, 1,704.81 and 1,125.47 is: 1,560.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.27 : 1,704.81 = 1,125.47 : x
  2. Step 2: Convert to fraction form
    1,229.27/1,704.81 = 1,125.47/x
  3. Step 3: Cross multiply
    1,229.27x = 1,704.81 × 1,125.47
  4. Step 4: Simplify right side
    1,229.27x = 1,918,712.51
  5. Step 5: Solve for x
    x = 1,918,712.51/1,229.27
  6. Step 6: Final answer
    x = 1,560.86

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.