Home / 2,772.68-4,158.57-1,129.16

Finding the Fourth Proportional to 2,772.68, 4,158.57 and 1,129.16

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Solution

The fourth proportional to 2,772.68, 4,158.57 and 1,129.16 is: 1,693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.68 : 4,158.57 = 1,129.16 : x
  2. Step 2: Convert to fraction form
    2,772.68/4,158.57 = 1,129.16/x
  3. Step 3: Cross multiply
    2,772.68x = 4,158.57 × 1,129.16
  4. Step 4: Simplify right side
    2,772.68x = 4,695,690.90
  5. Step 5: Solve for x
    x = 4,695,690.90/2,772.68
  6. Step 6: Final answer
    x = 1,693.56

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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.