Home / 8,115.96-11,205.90-5,329.56

Finding the Fourth Proportional to 8,115.96, 11,205.90 and 5,329.56

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Solution

The fourth proportional to 8,115.96, 11,205.90 and 5,329.56 is: 7,358.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.96 : 11,205.90 = 5,329.56 : x
  2. Step 2: Convert to fraction form
    8,115.96/11,205.90 = 5,329.56/x
  3. Step 3: Cross multiply
    8,115.96x = 11,205.90 × 5,329.56
  4. Step 4: Simplify right side
    8,115.96x = 59,722,516.40
  5. Step 5: Solve for x
    x = 59,722,516.40/8,115.96
  6. Step 6: Final answer
    x = 7,358.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.