Home / 7,961.75-10,988.42-5,731.01

Finding the Fourth Proportional to 7,961.75, 10,988.42 and 5,731.01

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Solution

The fourth proportional to 7,961.75, 10,988.42 and 5,731.01 is: 7,909.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.75 : 10,988.42 = 5,731.01 : x
  2. Step 2: Convert to fraction form
    7,961.75/10,988.42 = 5,731.01/x
  3. Step 3: Cross multiply
    7,961.75x = 10,988.42 × 5,731.01
  4. Step 4: Simplify right side
    7,961.75x = 62,974,744.90
  5. Step 5: Solve for x
    x = 62,974,744.90/7,961.75
  6. Step 6: Final answer
    x = 7,909.66

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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.