Home / 1,587.13-2,189.51-1,027.79

Finding the Fourth Proportional to 1,587.13, 2,189.51 and 1,027.79

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Solution

The fourth proportional to 1,587.13, 2,189.51 and 1,027.79 is: 1,417.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.13 : 2,189.51 = 1,027.79 : x
  2. Step 2: Convert to fraction form
    1,587.13/2,189.51 = 1,027.79/x
  3. Step 3: Cross multiply
    1,587.13x = 2,189.51 × 1,027.79
  4. Step 4: Simplify right side
    1,587.13x = 2,250,358.24
  5. Step 5: Solve for x
    x = 2,250,358.24/1,587.13
  6. Step 6: Final answer
    x = 1,417.88

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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.