Home / 1,120.16-1,680.96-932.96

Finding the Fourth Proportional to 1,120.16, 1,680.96 and 932.96

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Solution

The fourth proportional to 1,120.16, 1,680.96 and 932.96 is: 1,400.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.16 : 1,680.96 = 932.96 : x
  2. Step 2: Convert to fraction form
    1,120.16/1,680.96 = 932.96/x
  3. Step 3: Cross multiply
    1,120.16x = 1,680.96 × 932.96
  4. Step 4: Simplify right side
    1,120.16x = 1,568,268.44
  5. Step 5: Solve for x
    x = 1,568,268.44/1,120.16
  6. Step 6: Final answer
    x = 1,400.04

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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.