Home / 8,326.24-12,487.92-3,131.20

Finding the Fourth Proportional to 8,326.24, 12,487.92 and 3,131.20

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Solution

The fourth proportional to 8,326.24, 12,487.92 and 3,131.20 is: 4,696.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.24 : 12,487.92 = 3,131.20 : x
  2. Step 2: Convert to fraction form
    8,326.24/12,487.92 = 3,131.20/x
  3. Step 3: Cross multiply
    8,326.24x = 12,487.92 × 3,131.20
  4. Step 4: Simplify right side
    8,326.24x = 39,102,175.10
  5. Step 5: Solve for x
    x = 39,102,175.10/8,326.24
  6. Step 6: Final answer
    x = 4,696.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.