Home / 8,278.89-12,399.20-4,984.73

Finding the Fourth Proportional to 8,278.89, 12,399.20 and 4,984.73

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Solution

The fourth proportional to 8,278.89, 12,399.20 and 4,984.73 is: 7,465.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.89 : 12,399.20 = 4,984.73 : x
  2. Step 2: Convert to fraction form
    8,278.89/12,399.20 = 4,984.73/x
  3. Step 3: Cross multiply
    8,278.89x = 12,399.20 × 4,984.73
  4. Step 4: Simplify right side
    8,278.89x = 61,806,577.30
  5. Step 5: Solve for x
    x = 61,806,577.30/8,278.89
  6. Step 6: Final answer
    x = 7,465.56

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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.