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Finding the Fourth Proportional to 4,981.79, 7,462.96 and 3,881

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Solution

The fourth proportional to 4,981.79, 7,462.96 and 3,881 is: 5,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.79 : 7,462.96 = 3,881 : x
  2. Step 2: Convert to fraction form
    4,981.79/7,462.96 = 3,881/x
  3. Step 3: Cross multiply
    4,981.79x = 7,462.96 × 3,881
  4. Step 4: Simplify right side
    4,981.79x = 28,963,747.76
  5. Step 5: Solve for x
    x = 28,963,747.76/4,981.79
  6. Step 6: Final answer
    x = 5,813.92

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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.