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Finding the Fourth Proportional to 2,951.73, 4,427.59 and 871.76

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Solution

The fourth proportional to 2,951.73, 4,427.59 and 871.76 is: 1,307.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.73 : 4,427.59 = 871.76 : x
  2. Step 2: Convert to fraction form
    2,951.73/4,427.59 = 871.76/x
  3. Step 3: Cross multiply
    2,951.73x = 4,427.59 × 871.76
  4. Step 4: Simplify right side
    2,951.73x = 3,859,795.86
  5. Step 5: Solve for x
    x = 3,859,795.86/2,951.73
  6. Step 6: Final answer
    x = 1,307.64

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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.