Home / 1,724.72-2,587.39-800.15

Finding the Fourth Proportional to 1,724.72, 2,587.39 and 800.15

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Solution

The fourth proportional to 1,724.72, 2,587.39 and 800.15 is: 1,200.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.72 : 2,587.39 = 800.15 : x
  2. Step 2: Convert to fraction form
    1,724.72/2,587.39 = 800.15/x
  3. Step 3: Cross multiply
    1,724.72x = 2,587.39 × 800.15
  4. Step 4: Simplify right side
    1,724.72x = 2,070,285.17
  5. Step 5: Solve for x
    x = 2,070,285.17/1,724.72
  6. Step 6: Final answer
    x = 1,200.36

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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.