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Finding the Fourth Proportional to 1,581.57, 2,371 and 800.59

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Solution

The fourth proportional to 1,581.57, 2,371 and 800.59 is: 1,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.57 : 2,371 = 800.59 : x
  2. Step 2: Convert to fraction form
    1,581.57/2,371 = 800.59/x
  3. Step 3: Cross multiply
    1,581.57x = 2,371 × 800.59
  4. Step 4: Simplify right side
    1,581.57x = 1,898,198.89
  5. Step 5: Solve for x
    x = 1,898,198.89/1,581.57
  6. Step 6: Final answer
    x = 1,200.20

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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.