Home / 9,231.78-12,739.68-5,252.80

Finding the Fourth Proportional to 9,231.78, 12,739.68 and 5,252.80

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Solution

The fourth proportional to 9,231.78, 12,739.68 and 5,252.80 is: 7,248.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,231.78 : 12,739.68 = 5,252.80 : x
  2. Step 2: Convert to fraction form
    9,231.78/12,739.68 = 5,252.80/x
  3. Step 3: Cross multiply
    9,231.78x = 12,739.68 × 5,252.80
  4. Step 4: Simplify right side
    9,231.78x = 66,918,991.10
  5. Step 5: Solve for x
    x = 66,918,991.10/9,231.78
  6. Step 6: Final answer
    x = 7,248.76

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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.