Home / 3,871.13-5,342.05-2,102.73

Finding the Fourth Proportional to 3,871.13, 5,342.05 and 2,102.73

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Solution

The fourth proportional to 3,871.13, 5,342.05 and 2,102.73 is: 2,901.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.13 : 5,342.05 = 2,102.73 : x
  2. Step 2: Convert to fraction form
    3,871.13/5,342.05 = 2,102.73/x
  3. Step 3: Cross multiply
    3,871.13x = 5,342.05 × 2,102.73
  4. Step 4: Simplify right side
    3,871.13x = 11,232,916.47
  5. Step 5: Solve for x
    x = 11,232,916.47/3,871.13
  6. Step 6: Final answer
    x = 2,901.71

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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.