Home / 8,337.20-12,505.78-3,405.74

Finding the Fourth Proportional to 8,337.20, 12,505.78 and 3,405.74

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Solution

The fourth proportional to 8,337.20, 12,505.78 and 3,405.74 is: 5,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,337.20 : 12,505.78 = 3,405.74 : x
  2. Step 2: Convert to fraction form
    8,337.20/12,505.78 = 3,405.74/x
  3. Step 3: Cross multiply
    8,337.20x = 12,505.78 × 3,405.74
  4. Step 4: Simplify right side
    8,337.20x = 42,591,435.18
  5. Step 5: Solve for x
    x = 42,591,435.18/8,337.20
  6. Step 6: Final answer
    x = 5,108.60

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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.