Home / 8,161.20-12,241.36-4,785.87

Finding the Fourth Proportional to 8,161.20, 12,241.36 and 4,785.87

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Solution

The fourth proportional to 8,161.20, 12,241.36 and 4,785.87 is: 7,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.20 : 12,241.36 = 4,785.87 : x
  2. Step 2: Convert to fraction form
    8,161.20/12,241.36 = 4,785.87/x
  3. Step 3: Cross multiply
    8,161.20x = 12,241.36 × 4,785.87
  4. Step 4: Simplify right side
    8,161.20x = 58,585,557.58
  5. Step 5: Solve for x
    x = 58,585,557.58/8,161.20
  6. Step 6: Final answer
    x = 7,178.55

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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.