Home / 1,324.27-1,981.97-1,221.08

Finding the Fourth Proportional to 1,324.27, 1,981.97 and 1,221.08

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Solution

The fourth proportional to 1,324.27, 1,981.97 and 1,221.08 is: 1,827.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.27 : 1,981.97 = 1,221.08 : x
  2. Step 2: Convert to fraction form
    1,324.27/1,981.97 = 1,221.08/x
  3. Step 3: Cross multiply
    1,324.27x = 1,981.97 × 1,221.08
  4. Step 4: Simplify right side
    1,324.27x = 2,420,132.49
  5. Step 5: Solve for x
    x = 2,420,132.49/1,324.27
  6. Step 6: Final answer
    x = 1,827.52

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1.5x scale

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.