Home / 8,140.56-12,209.41-3,757.65

Finding the Fourth Proportional to 8,140.56, 12,209.41 and 3,757.65

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Solution

The fourth proportional to 8,140.56, 12,209.41 and 3,757.65 is: 5,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.56 : 12,209.41 = 3,757.65 : x
  2. Step 2: Convert to fraction form
    8,140.56/12,209.41 = 3,757.65/x
  3. Step 3: Cross multiply
    8,140.56x = 12,209.41 × 3,757.65
  4. Step 4: Simplify right side
    8,140.56x = 45,878,689.49
  5. Step 5: Solve for x
    x = 45,878,689.49/8,140.56
  6. Step 6: Final answer
    x = 5,635.81

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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.