Home / 3,856.28-5,321.18-2,261.75

Finding the Fourth Proportional to 3,856.28, 5,321.18 and 2,261.75

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Solution

The fourth proportional to 3,856.28, 5,321.18 and 2,261.75 is: 3,120.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.28 : 5,321.18 = 2,261.75 : x
  2. Step 2: Convert to fraction form
    3,856.28/5,321.18 = 2,261.75/x
  3. Step 3: Cross multiply
    3,856.28x = 5,321.18 × 2,261.75
  4. Step 4: Simplify right side
    3,856.28x = 12,035,145.19
  5. Step 5: Solve for x
    x = 12,035,145.19/3,856.28
  6. Step 6: Final answer
    x = 3,120.92

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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.