Home / 1,121.28-1,680.72-600.92

Finding the Fourth Proportional to 1,121.28, 1,680.72 and 600.92

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Solution

The fourth proportional to 1,121.28, 1,680.72 and 600.92 is: 900.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.28 : 1,680.72 = 600.92 : x
  2. Step 2: Convert to fraction form
    1,121.28/1,680.72 = 600.92/x
  3. Step 3: Cross multiply
    1,121.28x = 1,680.72 × 600.92
  4. Step 4: Simplify right side
    1,121.28x = 1,009,978.26
  5. Step 5: Solve for x
    x = 1,009,978.26/1,121.28
  6. Step 6: Final answer
    x = 900.74

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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.