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Finding the Fourth Proportional to 4,871.19, 6,722.90 and 2,747.16

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Solution

The fourth proportional to 4,871.19, 6,722.90 and 2,747.16 is: 3,791.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.19 : 6,722.90 = 2,747.16 : x
  2. Step 2: Convert to fraction form
    4,871.19/6,722.90 = 2,747.16/x
  3. Step 3: Cross multiply
    4,871.19x = 6,722.90 × 2,747.16
  4. Step 4: Simplify right side
    4,871.19x = 18,468,834.61
  5. Step 5: Solve for x
    x = 18,468,834.61/4,871.19
  6. Step 6: Final answer
    x = 3,791.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.