Home / 5,411.28-8,119.44-3,102.78

Finding the Fourth Proportional to 5,411.28, 8,119.44 and 3,102.78

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Solution

The fourth proportional to 5,411.28, 8,119.44 and 3,102.78 is: 4,655.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.28 : 8,119.44 = 3,102.78 : x
  2. Step 2: Convert to fraction form
    5,411.28/8,119.44 = 3,102.78/x
  3. Step 3: Cross multiply
    5,411.28x = 8,119.44 × 3,102.78
  4. Step 4: Simplify right side
    5,411.28x = 25,192,836.04
  5. Step 5: Solve for x
    x = 25,192,836.04/5,411.28
  6. Step 6: Final answer
    x = 4,655.61

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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.