Home / 1,633.97-2,251.40-1,587.80

Finding the Fourth Proportional to 1,633.97, 2,251.40 and 1,587.80

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Solution

The fourth proportional to 1,633.97, 2,251.40 and 1,587.80 is: 2,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,633.97 : 2,251.40 = 1,587.80 : x
  2. Step 2: Convert to fraction form
    1,633.97/2,251.40 = 1,587.80/x
  3. Step 3: Cross multiply
    1,633.97x = 2,251.40 × 1,587.80
  4. Step 4: Simplify right side
    1,633.97x = 3,574,770.61
  5. Step 5: Solve for x
    x = 3,574,770.61/1,633.97
  6. Step 6: Final answer
    x = 2,187.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.