Home / 1,432.38-1,982.10-1,222.23

Finding the Fourth Proportional to 1,432.38, 1,982.10 and 1,222.23

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Solution

The fourth proportional to 1,432.38, 1,982.10 and 1,222.23 is: 1,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.38 : 1,982.10 = 1,222.23 : x
  2. Step 2: Convert to fraction form
    1,432.38/1,982.10 = 1,222.23/x
  3. Step 3: Cross multiply
    1,432.38x = 1,982.10 × 1,222.23
  4. Step 4: Simplify right side
    1,432.38x = 2,422,582.08
  5. Step 5: Solve for x
    x = 2,422,582.08/1,432.38
  6. Step 6: Final answer
    x = 1,691.30

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1.5x scale

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.