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Finding the Fourth Proportional to 3,422.76, 4,721.88 and 2,714.88

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Solution

The fourth proportional to 3,422.76, 4,721.88 and 2,714.88 is: 3,745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.76 : 4,721.88 = 2,714.88 : x
  2. Step 2: Convert to fraction form
    3,422.76/4,721.88 = 2,714.88/x
  3. Step 3: Cross multiply
    3,422.76x = 4,721.88 × 2,714.88
  4. Step 4: Simplify right side
    3,422.76x = 12,819,337.57
  5. Step 5: Solve for x
    x = 12,819,337.57/3,422.76
  6. Step 6: Final answer
    x = 3,745.32

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Double scale
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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.