Home / 3,214.59-4,821.89-2,808.78

Finding the Fourth Proportional to 3,214.59, 4,821.89 and 2,808.78

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Solution

The fourth proportional to 3,214.59, 4,821.89 and 2,808.78 is: 4,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.59 : 4,821.89 = 2,808.78 : x
  2. Step 2: Convert to fraction form
    3,214.59/4,821.89 = 2,808.78/x
  3. Step 3: Cross multiply
    3,214.59x = 4,821.89 × 2,808.78
  4. Step 4: Simplify right side
    3,214.59x = 13,543,614.15
  5. Step 5: Solve for x
    x = 13,543,614.15/3,214.59
  6. Step 6: Final answer
    x = 4,213.17

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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.