Home / 3,794.40-5,691.28-2,145.76

Finding the Fourth Proportional to 3,794.40, 5,691.28 and 2,145.76

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Solution

The fourth proportional to 3,794.40, 5,691.28 and 2,145.76 is: 3,218.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,794.40 : 5,691.28 = 2,145.76 : x
  2. Step 2: Convert to fraction form
    3,794.40/5,691.28 = 2,145.76/x
  3. Step 3: Cross multiply
    3,794.40x = 5,691.28 × 2,145.76
  4. Step 4: Simplify right side
    3,794.40x = 12,212,120.97
  5. Step 5: Solve for x
    x = 12,212,120.97/3,794.40
  6. Step 6: Final answer
    x = 3,218.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.