Home / 1,458.16-2,187.58-418.17

Finding the Fourth Proportional to 1,458.16, 2,187.58 and 418.17

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Solution

The fourth proportional to 1,458.16, 2,187.58 and 418.17 is: 627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.16 : 2,187.58 = 418.17 : x
  2. Step 2: Convert to fraction form
    1,458.16/2,187.58 = 418.17/x
  3. Step 3: Cross multiply
    1,458.16x = 2,187.58 × 418.17
  4. Step 4: Simplify right side
    1,458.16x = 914,780.33
  5. Step 5: Solve for x
    x = 914,780.33/1,458.16
  6. Step 6: Final answer
    x = 627.35

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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.