Home / 3,115.92-4,672.44-1,817.76

Finding the Fourth Proportional to 3,115.92, 4,672.44 and 1,817.76

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Solution

The fourth proportional to 3,115.92, 4,672.44 and 1,817.76 is: 2,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.92 : 4,672.44 = 1,817.76 : x
  2. Step 2: Convert to fraction form
    3,115.92/4,672.44 = 1,817.76/x
  3. Step 3: Cross multiply
    3,115.92x = 4,672.44 × 1,817.76
  4. Step 4: Simplify right side
    3,115.92x = 8,493,374.53
  5. Step 5: Solve for x
    x = 8,493,374.53/3,115.92
  6. Step 6: Final answer
    x = 2,725.80

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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.