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Finding the Fourth Proportional to 2,575.18, 3,862.90 and 843.76

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Solution

The fourth proportional to 2,575.18, 3,862.90 and 843.76 is: 1,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,575.18 : 3,862.90 = 843.76 : x
  2. Step 2: Convert to fraction form
    2,575.18/3,862.90 = 843.76/x
  3. Step 3: Cross multiply
    2,575.18x = 3,862.90 × 843.76
  4. Step 4: Simplify right side
    2,575.18x = 3,259,360.50
  5. Step 5: Solve for x
    x = 3,259,360.50/2,575.18
  6. Step 6: Final answer
    x = 1,265.68

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1.5x scale

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.