Home / 4,120.88-5,691.69-2,792.30

Finding the Fourth Proportional to 4,120.88, 5,691.69 and 2,792.30

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Solution

The fourth proportional to 4,120.88, 5,691.69 and 2,792.30 is: 3,856.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.88 : 5,691.69 = 2,792.30 : x
  2. Step 2: Convert to fraction form
    4,120.88/5,691.69 = 2,792.30/x
  3. Step 3: Cross multiply
    4,120.88x = 5,691.69 × 2,792.30
  4. Step 4: Simplify right side
    4,120.88x = 15,892,877.53
  5. Step 5: Solve for x
    x = 15,892,877.53/4,120.88
  6. Step 6: Final answer
    x = 3,856.68

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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.