Home / 1,587.39-2,189.84-1,028.04

Finding the Fourth Proportional to 1,587.39, 2,189.84 and 1,028.04

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Solution

The fourth proportional to 1,587.39, 2,189.84 and 1,028.04 is: 1,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.39 : 2,189.84 = 1,028.04 : x
  2. Step 2: Convert to fraction form
    1,587.39/2,189.84 = 1,028.04/x
  3. Step 3: Cross multiply
    1,587.39x = 2,189.84 × 1,028.04
  4. Step 4: Simplify right side
    1,587.39x = 2,251,243.11
  5. Step 5: Solve for x
    x = 2,251,243.11/1,587.39
  6. Step 6: Final answer
    x = 1,418.20

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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.