Home / 9,391.26-12,960.08-5,142.25

Finding the Fourth Proportional to 9,391.26, 12,960.08 and 5,142.25

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Solution

The fourth proportional to 9,391.26, 12,960.08 and 5,142.25 is: 7,096.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,391.26 : 12,960.08 = 5,142.25 : x
  2. Step 2: Convert to fraction form
    9,391.26/12,960.08 = 5,142.25/x
  3. Step 3: Cross multiply
    9,391.26x = 12,960.08 × 5,142.25
  4. Step 4: Simplify right side
    9,391.26x = 66,644,010.08
  5. Step 5: Solve for x
    x = 66,644,010.08/9,391.26
  6. Step 6: Final answer
    x = 7,096.39

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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.