Home / 7,151.72-10,707.75-5,391.38

Finding the Fourth Proportional to 7,151.72, 10,707.75 and 5,391.38

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Solution

The fourth proportional to 7,151.72, 10,707.75 and 5,391.38 is: 8,072.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.72 : 10,707.75 = 5,391.38 : x
  2. Step 2: Convert to fraction form
    7,151.72/10,707.75 = 5,391.38/x
  3. Step 3: Cross multiply
    7,151.72x = 10,707.75 × 5,391.38
  4. Step 4: Simplify right side
    7,151.72x = 57,729,575.96
  5. Step 5: Solve for x
    x = 57,729,575.96/7,151.72
  6. Step 6: Final answer
    x = 8,072.13

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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.