Home / 1,458.92-2,178.62-1,147.28

Finding the Fourth Proportional to 1,458.92, 2,178.62 and 1,147.28

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Solution

The fourth proportional to 1,458.92, 2,178.62 and 1,147.28 is: 1,713.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.92 : 2,178.62 = 1,147.28 : x
  2. Step 2: Convert to fraction form
    1,458.92/2,178.62 = 1,147.28/x
  3. Step 3: Cross multiply
    1,458.92x = 2,178.62 × 1,147.28
  4. Step 4: Simplify right side
    1,458.92x = 2,499,487.15
  5. Step 5: Solve for x
    x = 2,499,487.15/1,458.92
  6. Step 6: Final answer
    x = 1,713.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.