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Finding the Fourth Proportional to 3,143.70, 4,715.31 and 1,063.74

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Solution

The fourth proportional to 3,143.70, 4,715.31 and 1,063.74 is: 1,595.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.70 : 4,715.31 = 1,063.74 : x
  2. Step 2: Convert to fraction form
    3,143.70/4,715.31 = 1,063.74/x
  3. Step 3: Cross multiply
    3,143.70x = 4,715.31 × 1,063.74
  4. Step 4: Simplify right side
    3,143.70x = 5,015,863.86
  5. Step 5: Solve for x
    x = 5,015,863.86/3,143.70
  6. Step 6: Final answer
    x = 1,595.53

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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.