Home / 8,278.20-12,419.10-2,730.60

Finding the Fourth Proportional to 8,278.20, 12,419.10 and 2,730.60

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Solution

The fourth proportional to 8,278.20, 12,419.10 and 2,730.60 is: 4,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.20 : 12,419.10 = 2,730.60 : x
  2. Step 2: Convert to fraction form
    8,278.20/12,419.10 = 2,730.60/x
  3. Step 3: Cross multiply
    8,278.20x = 12,419.10 × 2,730.60
  4. Step 4: Simplify right side
    8,278.20x = 33,911,594.46
  5. Step 5: Solve for x
    x = 33,911,594.46/8,278.20
  6. Step 6: Final answer
    x = 4,096.49

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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.