Home / 3,691.88-5,094.87-2,120.08

Finding the Fourth Proportional to 3,691.88, 5,094.87 and 2,120.08

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Solution

The fourth proportional to 3,691.88, 5,094.87 and 2,120.08 is: 2,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.88 : 5,094.87 = 2,120.08 : x
  2. Step 2: Convert to fraction form
    3,691.88/5,094.87 = 2,120.08/x
  3. Step 3: Cross multiply
    3,691.88x = 5,094.87 × 2,120.08
  4. Step 4: Simplify right side
    3,691.88x = 10,801,531.99
  5. Step 5: Solve for x
    x = 10,801,531.99/3,691.88
  6. Step 6: Final answer
    x = 2,925.75

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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.