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Finding the Fourth Proportional to 3,398.49, 5,098.21 and 3,211.74

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Solution

The fourth proportional to 3,398.49, 5,098.21 and 3,211.74 is: 4,818.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.49 : 5,098.21 = 3,211.74 : x
  2. Step 2: Convert to fraction form
    3,398.49/5,098.21 = 3,211.74/x
  3. Step 3: Cross multiply
    3,398.49x = 5,098.21 × 3,211.74
  4. Step 4: Simplify right side
    3,398.49x = 16,374,116.96
  5. Step 5: Solve for x
    x = 16,374,116.96/3,398.49
  6. Step 6: Final answer
    x = 4,818.06

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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.