Home / 9,231.12-12,738.56-5,251.68

Finding the Fourth Proportional to 9,231.12, 12,738.56 and 5,251.68

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Solution

The fourth proportional to 9,231.12, 12,738.56 and 5,251.68 is: 7,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,231.12 : 12,738.56 = 5,251.68 : x
  2. Step 2: Convert to fraction form
    9,231.12/12,738.56 = 5,251.68/x
  3. Step 3: Cross multiply
    9,231.12x = 12,738.56 × 5,251.68
  4. Step 4: Simplify right side
    9,231.12x = 66,898,840.78
  5. Step 5: Solve for x
    x = 66,898,840.78/9,231.12
  6. Step 6: Final answer
    x = 7,247.10

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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.