Home / 7,769.96-10,731.42-5,129.12

Finding the Fourth Proportional to 7,769.96, 10,731.42 and 5,129.12

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Solution

The fourth proportional to 7,769.96, 10,731.42 and 5,129.12 is: 7,084.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.96 : 10,731.42 = 5,129.12 : x
  2. Step 2: Convert to fraction form
    7,769.96/10,731.42 = 5,129.12/x
  3. Step 3: Cross multiply
    7,769.96x = 10,731.42 × 5,129.12
  4. Step 4: Simplify right side
    7,769.96x = 55,042,740.95
  5. Step 5: Solve for x
    x = 55,042,740.95/7,769.96
  6. Step 6: Final answer
    x = 7,084.04

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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.