Home / 3,877.13-5,350.39-2,108.70

Finding the Fourth Proportional to 3,877.13, 5,350.39 and 2,108.70

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Solution

The fourth proportional to 3,877.13, 5,350.39 and 2,108.70 is: 2,909.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.13 : 5,350.39 = 2,108.70 : x
  2. Step 2: Convert to fraction form
    3,877.13/5,350.39 = 2,108.70/x
  3. Step 3: Cross multiply
    3,877.13x = 5,350.39 × 2,108.70
  4. Step 4: Simplify right side
    3,877.13x = 11,282,362.12
  5. Step 5: Solve for x
    x = 11,282,362.12/3,877.13
  6. Step 6: Final answer
    x = 2,909.98

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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.