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Finding the Fourth Proportional to 3,326.60, 4,979.10 and 2,937.80

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Solution

The fourth proportional to 3,326.60, 4,979.10 and 2,937.80 is: 4,397.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.60 : 4,979.10 = 2,937.80 : x
  2. Step 2: Convert to fraction form
    3,326.60/4,979.10 = 2,937.80/x
  3. Step 3: Cross multiply
    3,326.60x = 4,979.10 × 2,937.80
  4. Step 4: Simplify right side
    3,326.60x = 14,627,599.98
  5. Step 5: Solve for x
    x = 14,627,599.98/3,326.60
  6. Step 6: Final answer
    x = 4,397.16

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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.