Home / 1,432.24-2,146.56-661.12

Finding the Fourth Proportional to 1,432.24, 2,146.56 and 661.12

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Solution

The fourth proportional to 1,432.24, 2,146.56 and 661.12 is: 990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.24 : 2,146.56 = 661.12 : x
  2. Step 2: Convert to fraction form
    1,432.24/2,146.56 = 661.12/x
  3. Step 3: Cross multiply
    1,432.24x = 2,146.56 × 661.12
  4. Step 4: Simplify right side
    1,432.24x = 1,419,133.75
  5. Step 5: Solve for x
    x = 1,419,133.75/1,432.24
  6. Step 6: Final answer
    x = 990.85

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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.