Home / 2,874.39-3,966.87-1,615.44

Finding the Fourth Proportional to 2,874.39, 3,966.87 and 1,615.44

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Solution

The fourth proportional to 2,874.39, 3,966.87 and 1,615.44 is: 2,229.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.39 : 3,966.87 = 1,615.44 : x
  2. Step 2: Convert to fraction form
    2,874.39/3,966.87 = 1,615.44/x
  3. Step 3: Cross multiply
    2,874.39x = 3,966.87 × 1,615.44
  4. Step 4: Simplify right side
    2,874.39x = 6,408,240.47
  5. Step 5: Solve for x
    x = 6,408,240.47/2,874.39
  6. Step 6: Final answer
    x = 2,229.43

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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.