Home / 1,727.93-2,591.39-687.59

Finding the Fourth Proportional to 1,727.93, 2,591.39 and 687.59

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Solution

The fourth proportional to 1,727.93, 2,591.39 and 687.59 is: 1,031.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.93 : 2,591.39 = 687.59 : x
  2. Step 2: Convert to fraction form
    1,727.93/2,591.39 = 687.59/x
  3. Step 3: Cross multiply
    1,727.93x = 2,591.39 × 687.59
  4. Step 4: Simplify right side
    1,727.93x = 1,781,812.33
  5. Step 5: Solve for x
    x = 1,781,812.33/1,727.93
  6. Step 6: Final answer
    x = 1,031.18

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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.