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Finding the Fourth Proportional to 3,871.06, 5,339.22 and 2,750.80

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Solution

The fourth proportional to 3,871.06, 5,339.22 and 2,750.80 is: 3,794.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.06 : 5,339.22 = 2,750.80 : x
  2. Step 2: Convert to fraction form
    3,871.06/5,339.22 = 2,750.80/x
  3. Step 3: Cross multiply
    3,871.06x = 5,339.22 × 2,750.80
  4. Step 4: Simplify right side
    3,871.06x = 14,687,126.38
  5. Step 5: Solve for x
    x = 14,687,126.38/3,871.06
  6. Step 6: Final answer
    x = 3,794.08

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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.