Home / 8,121.15-11,206.86-5,097.89

Finding the Fourth Proportional to 8,121.15, 11,206.86 and 5,097.89

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Solution

The fourth proportional to 8,121.15, 11,206.86 and 5,097.89 is: 7,034.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.15 : 11,206.86 = 5,097.89 : x
  2. Step 2: Convert to fraction form
    8,121.15/11,206.86 = 5,097.89/x
  3. Step 3: Cross multiply
    8,121.15x = 11,206.86 × 5,097.89
  4. Step 4: Simplify right side
    8,121.15x = 57,131,380.29
  5. Step 5: Solve for x
    x = 57,131,380.29/8,121.15
  6. Step 6: Final answer
    x = 7,034.89

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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.