Home / 1,452.24-2,178.97-631.21

Finding the Fourth Proportional to 1,452.24, 2,178.97 and 631.21

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Solution

The fourth proportional to 1,452.24, 2,178.97 and 631.21 is: 947.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.24 : 2,178.97 = 631.21 : x
  2. Step 2: Convert to fraction form
    1,452.24/2,178.97 = 631.21/x
  3. Step 3: Cross multiply
    1,452.24x = 2,178.97 × 631.21
  4. Step 4: Simplify right side
    1,452.24x = 1,375,383.78
  5. Step 5: Solve for x
    x = 1,375,383.78/1,452.24
  6. Step 6: Final answer
    x = 947.08

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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.