Home / 3,856.24-5,321.62-2,087.84

Finding the Fourth Proportional to 3,856.24, 5,321.62 and 2,087.84

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Solution

The fourth proportional to 3,856.24, 5,321.62 and 2,087.84 is: 2,881.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.24 : 5,321.62 = 2,087.84 : x
  2. Step 2: Convert to fraction form
    3,856.24/5,321.62 = 2,087.84/x
  3. Step 3: Cross multiply
    3,856.24x = 5,321.62 × 2,087.84
  4. Step 4: Simplify right side
    3,856.24x = 11,110,691.10
  5. Step 5: Solve for x
    x = 11,110,691.10/3,856.24
  6. Step 6: Final answer
    x = 2,881.22

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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.