Home / 1,197.20-1,650.71-1,031.13

Finding the Fourth Proportional to 1,197.20, 1,650.71 and 1,031.13

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Solution

The fourth proportional to 1,197.20, 1,650.71 and 1,031.13 is: 1,421.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.20 : 1,650.71 = 1,031.13 : x
  2. Step 2: Convert to fraction form
    1,197.20/1,650.71 = 1,031.13/x
  3. Step 3: Cross multiply
    1,197.20x = 1,650.71 × 1,031.13
  4. Step 4: Simplify right side
    1,197.20x = 1,702,099.18
  5. Step 5: Solve for x
    x = 1,702,099.18/1,197.20
  6. Step 6: Final answer
    x = 1,421.73

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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.