Home / 1,432.16-2,147.44-661.92

Finding the Fourth Proportional to 1,432.16, 2,147.44 and 661.92

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Solution

The fourth proportional to 1,432.16, 2,147.44 and 661.92 is: 992.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.16 : 2,147.44 = 661.92 : x
  2. Step 2: Convert to fraction form
    1,432.16/2,147.44 = 661.92/x
  3. Step 3: Cross multiply
    1,432.16x = 2,147.44 × 661.92
  4. Step 4: Simplify right side
    1,432.16x = 1,421,433.48
  5. Step 5: Solve for x
    x = 1,421,433.48/1,432.16
  6. Step 6: Final answer
    x = 992.51

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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.