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Finding the Fourth Proportional to 4,868.71, 7,302.42 and 2,781.95

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Solution

The fourth proportional to 4,868.71, 7,302.42 and 2,781.95 is: 4,172.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,868.71 : 7,302.42 = 2,781.95 : x
  2. Step 2: Convert to fraction form
    4,868.71/7,302.42 = 2,781.95/x
  3. Step 3: Cross multiply
    4,868.71x = 7,302.42 × 2,781.95
  4. Step 4: Simplify right side
    4,868.71x = 20,314,930.81
  5. Step 5: Solve for x
    x = 20,314,930.81/4,868.71
  6. Step 6: Final answer
    x = 4,172.55

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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.