Home / 2,218.66-3,326.01-919.30

Finding the Fourth Proportional to 2,218.66, 3,326.01 and 919.30

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Solution

The fourth proportional to 2,218.66, 3,326.01 and 919.30 is: 1,378.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.66 : 3,326.01 = 919.30 : x
  2. Step 2: Convert to fraction form
    2,218.66/3,326.01 = 919.30/x
  3. Step 3: Cross multiply
    2,218.66x = 3,326.01 × 919.30
  4. Step 4: Simplify right side
    2,218.66x = 3,057,600.99
  5. Step 5: Solve for x
    x = 3,057,600.99/2,218.66
  6. Step 6: Final answer
    x = 1,378.13

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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.