Home / 8,318.96-12,455.92-5,191.48

Finding the Fourth Proportional to 8,318.96, 12,455.92 and 5,191.48

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Solution

The fourth proportional to 8,318.96, 12,455.92 and 5,191.48 is: 7,773.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.96 : 12,455.92 = 5,191.48 : x
  2. Step 2: Convert to fraction form
    8,318.96/12,455.92 = 5,191.48/x
  3. Step 3: Cross multiply
    8,318.96x = 12,455.92 × 5,191.48
  4. Step 4: Simplify right side
    8,318.96x = 64,664,659.56
  5. Step 5: Solve for x
    x = 64,664,659.56/8,318.96
  6. Step 6: Final answer
    x = 7,773.17

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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.