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Finding the Fourth Proportional to 3,101.72, 4,272.06 and 2,868.16

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Solution

The fourth proportional to 3,101.72, 4,272.06 and 2,868.16 is: 3,950.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.72 : 4,272.06 = 2,868.16 : x
  2. Step 2: Convert to fraction form
    3,101.72/4,272.06 = 2,868.16/x
  3. Step 3: Cross multiply
    3,101.72x = 4,272.06 × 2,868.16
  4. Step 4: Simplify right side
    3,101.72x = 12,252,951.61
  5. Step 5: Solve for x
    x = 12,252,951.61/3,101.72
  6. Step 6: Final answer
    x = 3,950.37

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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.