Home / 1,354.24-2,031.36-487.93

Finding the Fourth Proportional to 1,354.24, 2,031.36 and 487.93

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Solution

The fourth proportional to 1,354.24, 2,031.36 and 487.93 is: 731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.24 : 2,031.36 = 487.93 : x
  2. Step 2: Convert to fraction form
    1,354.24/2,031.36 = 487.93/x
  3. Step 3: Cross multiply
    1,354.24x = 2,031.36 × 487.93
  4. Step 4: Simplify right side
    1,354.24x = 991,161.48
  5. Step 5: Solve for x
    x = 991,161.48/1,354.24
  6. Step 6: Final answer
    x = 731.90

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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.