Home / 8,124.30-12,186.45-5,193.90

Finding the Fourth Proportional to 8,124.30, 12,186.45 and 5,193.90

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Solution

The fourth proportional to 8,124.30, 12,186.45 and 5,193.90 is: 7,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.30 : 12,186.45 = 5,193.90 : x
  2. Step 2: Convert to fraction form
    8,124.30/12,186.45 = 5,193.90/x
  3. Step 3: Cross multiply
    8,124.30x = 12,186.45 × 5,193.90
  4. Step 4: Simplify right side
    8,124.30x = 63,295,202.66
  5. Step 5: Solve for x
    x = 63,295,202.66/8,124.30
  6. Step 6: Final answer
    x = 7,790.85

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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.