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Finding the Fourth Proportional to 2,874.98, 3,967.14 and 1,615.78

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Solution

The fourth proportional to 2,874.98, 3,967.14 and 1,615.78 is: 2,229.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.98 : 3,967.14 = 1,615.78 : x
  2. Step 2: Convert to fraction form
    2,874.98/3,967.14 = 1,615.78/x
  3. Step 3: Cross multiply
    2,874.98x = 3,967.14 × 1,615.78
  4. Step 4: Simplify right side
    2,874.98x = 6,410,025.47
  5. Step 5: Solve for x
    x = 6,410,025.47/2,874.98
  6. Step 6: Final answer
    x = 2,229.59

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1.5x scale

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.