Home / 2,213.76-3,320.80-914.48

Finding the Fourth Proportional to 2,213.76, 3,320.80 and 914.48

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Solution

The fourth proportional to 2,213.76, 3,320.80 and 914.48 is: 1,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.76 : 3,320.80 = 914.48 : x
  2. Step 2: Convert to fraction form
    2,213.76/3,320.80 = 914.48/x
  3. Step 3: Cross multiply
    2,213.76x = 3,320.80 × 914.48
  4. Step 4: Simplify right side
    2,213.76x = 3,036,805.18
  5. Step 5: Solve for x
    x = 3,036,805.18/2,213.76
  6. Step 6: Final answer
    x = 1,371.79

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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.