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Finding the Fourth Proportional to 3,168.88, 4,753.52 and 979.12

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Solution

The fourth proportional to 3,168.88, 4,753.52 and 979.12 is: 1,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.88 : 4,753.52 = 979.12 : x
  2. Step 2: Convert to fraction form
    3,168.88/4,753.52 = 979.12/x
  3. Step 3: Cross multiply
    3,168.88x = 4,753.52 × 979.12
  4. Step 4: Simplify right side
    3,168.88x = 4,654,266.50
  5. Step 5: Solve for x
    x = 4,654,266.50/3,168.88
  6. Step 6: Final answer
    x = 1,468.74

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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.