Home / 9,391.33-12,960.19-5,142.39

Finding the Fourth Proportional to 9,391.33, 12,960.19 and 5,142.39

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Solution

The fourth proportional to 9,391.33, 12,960.19 and 5,142.39 is: 7,096.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,391.33 : 12,960.19 = 5,142.39 : x
  2. Step 2: Convert to fraction form
    9,391.33/12,960.19 = 5,142.39/x
  3. Step 3: Cross multiply
    9,391.33x = 12,960.19 × 5,142.39
  4. Step 4: Simplify right side
    9,391.33x = 66,646,280.36
  5. Step 5: Solve for x
    x = 66,646,280.36/9,391.33
  6. Step 6: Final answer
    x = 7,096.58

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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.