Home / 8,311.18-12,455.90-3,375.04

Finding the Fourth Proportional to 8,311.18, 12,455.90 and 3,375.04

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Solution

The fourth proportional to 8,311.18, 12,455.90 and 3,375.04 is: 5,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.18 : 12,455.90 = 3,375.04 : x
  2. Step 2: Convert to fraction form
    8,311.18/12,455.90 = 3,375.04/x
  3. Step 3: Cross multiply
    8,311.18x = 12,455.90 × 3,375.04
  4. Step 4: Simplify right side
    8,311.18x = 42,039,160.74
  5. Step 5: Solve for x
    x = 42,039,160.74/8,311.18
  6. Step 6: Final answer
    x = 5,058.15

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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.