Home / 3,909.50-5,395.25-2,141.12

Finding the Fourth Proportional to 3,909.50, 5,395.25 and 2,141.12

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Solution

The fourth proportional to 3,909.50, 5,395.25 and 2,141.12 is: 2,954.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.50 : 5,395.25 = 2,141.12 : x
  2. Step 2: Convert to fraction form
    3,909.50/5,395.25 = 2,141.12/x
  3. Step 3: Cross multiply
    3,909.50x = 5,395.25 × 2,141.12
  4. Step 4: Simplify right side
    3,909.50x = 11,551,877.68
  5. Step 5: Solve for x
    x = 11,551,877.68/3,909.50
  6. Step 6: Final answer
    x = 2,954.82

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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.