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Finding the Fourth Proportional to 3,159.59, 4,736.12 and 1,311.71

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Solution

The fourth proportional to 3,159.59, 4,736.12 and 1,311.71 is: 1,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.59 : 4,736.12 = 1,311.71 : x
  2. Step 2: Convert to fraction form
    3,159.59/4,736.12 = 1,311.71/x
  3. Step 3: Cross multiply
    3,159.59x = 4,736.12 × 1,311.71
  4. Step 4: Simplify right side
    3,159.59x = 6,212,385.73
  5. Step 5: Solve for x
    x = 6,212,385.73/3,159.59
  6. Step 6: Final answer
    x = 1,966.20

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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.