Home / 3,877.59-5,351.22-2,221.91

Finding the Fourth Proportional to 3,877.59, 5,351.22 and 2,221.91

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Solution

The fourth proportional to 3,877.59, 5,351.22 and 2,221.91 is: 3,066.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.59 : 5,351.22 = 2,221.91 : x
  2. Step 2: Convert to fraction form
    3,877.59/5,351.22 = 2,221.91/x
  3. Step 3: Cross multiply
    3,877.59x = 5,351.22 × 2,221.91
  4. Step 4: Simplify right side
    3,877.59x = 11,889,918.12
  5. Step 5: Solve for x
    x = 11,889,918.12/3,877.59
  6. Step 6: Final answer
    x = 3,066.32

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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.