Home / 3,691.12-5,087.76-2,893.12

Finding the Fourth Proportional to 3,691.12, 5,087.76 and 2,893.12

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Solution

The fourth proportional to 3,691.12, 5,087.76 and 2,893.12 is: 3,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.12 : 5,087.76 = 2,893.12 : x
  2. Step 2: Convert to fraction form
    3,691.12/5,087.76 = 2,893.12/x
  3. Step 3: Cross multiply
    3,691.12x = 5,087.76 × 2,893.12
  4. Step 4: Simplify right side
    3,691.12x = 14,719,500.21
  5. Step 5: Solve for x
    x = 14,719,500.21/3,691.12
  6. Step 6: Final answer
    x = 3,987.81

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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.