Home / 3,212.75-4,433.96-1,815.59

Finding the Fourth Proportional to 3,212.75, 4,433.96 and 1,815.59

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Solution

The fourth proportional to 3,212.75, 4,433.96 and 1,815.59 is: 2,505.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.75 : 4,433.96 = 1,815.59 : x
  2. Step 2: Convert to fraction form
    3,212.75/4,433.96 = 1,815.59/x
  3. Step 3: Cross multiply
    3,212.75x = 4,433.96 × 1,815.59
  4. Step 4: Simplify right side
    3,212.75x = 8,050,253.44
  5. Step 5: Solve for x
    x = 8,050,253.44/3,212.75
  6. Step 6: Final answer
    x = 2,505.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.