Home / 8,125.32-12,170.96-5,188.66

Finding the Fourth Proportional to 8,125.32, 12,170.96 and 5,188.66

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Solution

The fourth proportional to 8,125.32, 12,170.96 and 5,188.66 is: 7,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.32 : 12,170.96 = 5,188.66 : x
  2. Step 2: Convert to fraction form
    8,125.32/12,170.96 = 5,188.66/x
  3. Step 3: Cross multiply
    8,125.32x = 12,170.96 × 5,188.66
  4. Step 4: Simplify right side
    8,125.32x = 63,150,973.31
  5. Step 5: Solve for x
    x = 63,150,973.31/8,125.32
  6. Step 6: Final answer
    x = 7,772.12

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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.