Home / 8,318.06-12,475.66-2,770.78

Finding the Fourth Proportional to 8,318.06, 12,475.66 and 2,770.78

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Solution

The fourth proportional to 8,318.06, 12,475.66 and 2,770.78 is: 4,155.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.06 : 12,475.66 = 2,770.78 : x
  2. Step 2: Convert to fraction form
    8,318.06/12,475.66 = 2,770.78/x
  3. Step 3: Cross multiply
    8,318.06x = 12,475.66 × 2,770.78
  4. Step 4: Simplify right side
    8,318.06x = 34,567,309.21
  5. Step 5: Solve for x
    x = 34,567,309.21/8,318.06
  6. Step 6: Final answer
    x = 4,155.69

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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.