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Finding the Fourth Proportional to 3,314.97, 4,972.63 and 849.81

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Solution

The fourth proportional to 3,314.97, 4,972.63 and 849.81 is: 1,274.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,314.97 : 4,972.63 = 849.81 : x
  2. Step 2: Convert to fraction form
    3,314.97/4,972.63 = 849.81/x
  3. Step 3: Cross multiply
    3,314.97x = 4,972.63 × 849.81
  4. Step 4: Simplify right side
    3,314.97x = 4,225,790.70
  5. Step 5: Solve for x
    x = 4,225,790.70/3,314.97
  6. Step 6: Final answer
    x = 1,274.76

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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.