Home / 9,231.21-12,740.31-5,252.72

Finding the Fourth Proportional to 9,231.21, 12,740.31 and 5,252.72

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Solution

The fourth proportional to 9,231.21, 12,740.31 and 5,252.72 is: 7,249.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,231.21 : 12,740.31 = 5,252.72 : x
  2. Step 2: Convert to fraction form
    9,231.21/12,740.31 = 5,252.72/x
  3. Step 3: Cross multiply
    9,231.21x = 12,740.31 × 5,252.72
  4. Step 4: Simplify right side
    9,231.21x = 66,921,217.44
  5. Step 5: Solve for x
    x = 66,921,217.44/9,231.21
  6. Step 6: Final answer
    x = 7,249.45

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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.