Home / 3,877.19-5,350.53-2,108.78

Finding the Fourth Proportional to 3,877.19, 5,350.53 and 2,108.78

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Solution

The fourth proportional to 3,877.19, 5,350.53 and 2,108.78 is: 2,910.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.19 : 5,350.53 = 2,108.78 : x
  2. Step 2: Convert to fraction form
    3,877.19/5,350.53 = 2,108.78/x
  3. Step 3: Cross multiply
    3,877.19x = 5,350.53 × 2,108.78
  4. Step 4: Simplify right side
    3,877.19x = 11,283,063.90
  5. Step 5: Solve for x
    x = 11,283,063.90/3,877.19
  6. Step 6: Final answer
    x = 2,910.12

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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.