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Finding the Fourth Proportional to 5,171.63, 7,758.97 and 2,981.93

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Solution

The fourth proportional to 5,171.63, 7,758.97 and 2,981.93 is: 4,473.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.63 : 7,758.97 = 2,981.93 : x
  2. Step 2: Convert to fraction form
    5,171.63/7,758.97 = 2,981.93/x
  3. Step 3: Cross multiply
    5,171.63x = 7,758.97 × 2,981.93
  4. Step 4: Simplify right side
    5,171.63x = 23,136,659.16
  5. Step 5: Solve for x
    x = 23,136,659.16/5,171.63
  6. Step 6: Final answer
    x = 4,473.77

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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.