Home / 3,877.16-5,350.37-2,108.72

Finding the Fourth Proportional to 3,877.16, 5,350.37 and 2,108.72

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Solution

The fourth proportional to 3,877.16, 5,350.37 and 2,108.72 is: 2,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.16 : 5,350.37 = 2,108.72 : x
  2. Step 2: Convert to fraction form
    3,877.16/5,350.37 = 2,108.72/x
  3. Step 3: Cross multiply
    3,877.16x = 5,350.37 × 2,108.72
  4. Step 4: Simplify right side
    3,877.16x = 11,282,421.68
  5. Step 5: Solve for x
    x = 11,282,421.68/3,877.16
  6. Step 6: Final answer
    x = 2,909.97

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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.