Home / 3,213-4,433.97-1,815.78

Finding the Fourth Proportional to 3,213, 4,433.97 and 1,815.78

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Solution

The fourth proportional to 3,213, 4,433.97 and 1,815.78 is: 2,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213 : 4,433.97 = 1,815.78 : x
  2. Step 2: Convert to fraction form
    3,213/4,433.97 = 1,815.78/x
  3. Step 3: Cross multiply
    3,213x = 4,433.97 × 1,815.78
  4. Step 4: Simplify right side
    3,213x = 8,051,114.05
  5. Step 5: Solve for x
    x = 8,051,114.05/3,213
  6. Step 6: Final answer
    x = 2,505.79

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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.