Home / 1,458.18-2,187.32-484.29

Finding the Fourth Proportional to 1,458.18, 2,187.32 and 484.29

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Solution

The fourth proportional to 1,458.18, 2,187.32 and 484.29 is: 726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.18 : 2,187.32 = 484.29 : x
  2. Step 2: Convert to fraction form
    1,458.18/2,187.32 = 484.29/x
  3. Step 3: Cross multiply
    1,458.18x = 2,187.32 × 484.29
  4. Step 4: Simplify right side
    1,458.18x = 1,059,297.20
  5. Step 5: Solve for x
    x = 1,059,297.20/1,458.18
  6. Step 6: Final answer
    x = 726.45

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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.