Home / 3,871.09-5,342.08-2,102.71

Finding the Fourth Proportional to 3,871.09, 5,342.08 and 2,102.71

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Solution

The fourth proportional to 3,871.09, 5,342.08 and 2,102.71 is: 2,901.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.09 : 5,342.08 = 2,102.71 : x
  2. Step 2: Convert to fraction form
    3,871.09/5,342.08 = 2,102.71/x
  3. Step 3: Cross multiply
    3,871.09x = 5,342.08 × 2,102.71
  4. Step 4: Simplify right side
    3,871.09x = 11,232,834.47
  5. Step 5: Solve for x
    x = 11,232,834.47/3,871.09
  6. Step 6: Final answer
    x = 2,901.72

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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.