Home / 9,391.19-12,959.78-5,142.29

Finding the Fourth Proportional to 9,391.19, 12,959.78 and 5,142.29

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Solution

The fourth proportional to 9,391.19, 12,959.78 and 5,142.29 is: 7,096.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,391.19 : 12,959.78 = 5,142.29 : x
  2. Step 2: Convert to fraction form
    9,391.19/12,959.78 = 5,142.29/x
  3. Step 3: Cross multiply
    9,391.19x = 12,959.78 × 5,142.29
  4. Step 4: Simplify right side
    9,391.19x = 66,642,856.59
  5. Step 5: Solve for x
    x = 66,642,856.59/9,391.19
  6. Step 6: Final answer
    x = 7,096.32

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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.