Home / 8,135.45-12,207.78-3,752.90

Finding the Fourth Proportional to 8,135.45, 12,207.78 and 3,752.90

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Solution

The fourth proportional to 8,135.45, 12,207.78 and 3,752.90 is: 5,631.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.45 : 12,207.78 = 3,752.90 : x
  2. Step 2: Convert to fraction form
    8,135.45/12,207.78 = 3,752.90/x
  3. Step 3: Cross multiply
    8,135.45x = 12,207.78 × 3,752.90
  4. Step 4: Simplify right side
    8,135.45x = 45,814,577.56
  5. Step 5: Solve for x
    x = 45,814,577.56/8,135.45
  6. Step 6: Final answer
    x = 5,631.47

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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.