Home / 8,121.44-12,182.40-3,192.32

Finding the Fourth Proportional to 8,121.44, 12,182.40 and 3,192.32

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Solution

The fourth proportional to 8,121.44, 12,182.40 and 3,192.32 is: 4,788.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.44 : 12,182.40 = 3,192.32 : x
  2. Step 2: Convert to fraction form
    8,121.44/12,182.40 = 3,192.32/x
  3. Step 3: Cross multiply
    8,121.44x = 12,182.40 × 3,192.32
  4. Step 4: Simplify right side
    8,121.44x = 38,890,119.17
  5. Step 5: Solve for x
    x = 38,890,119.17/8,121.44
  6. Step 6: Final answer
    x = 4,788.57

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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.