Home / 1,121.74-1,546.17-1,031.23

Finding the Fourth Proportional to 1,121.74, 1,546.17 and 1,031.23

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Solution

The fourth proportional to 1,121.74, 1,546.17 and 1,031.23 is: 1,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.74 : 1,546.17 = 1,031.23 : x
  2. Step 2: Convert to fraction form
    1,121.74/1,546.17 = 1,031.23/x
  3. Step 3: Cross multiply
    1,121.74x = 1,546.17 × 1,031.23
  4. Step 4: Simplify right side
    1,121.74x = 1,594,456.89
  5. Step 5: Solve for x
    x = 1,594,456.89/1,121.74
  6. Step 6: Final answer
    x = 1,421.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.