Home / 2,218.73-3,061.99-1,224.01

Finding the Fourth Proportional to 2,218.73, 3,061.99 and 1,224.01

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Solution

The fourth proportional to 2,218.73, 3,061.99 and 1,224.01 is: 1,689.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.73 : 3,061.99 = 1,224.01 : x
  2. Step 2: Convert to fraction form
    2,218.73/3,061.99 = 1,224.01/x
  3. Step 3: Cross multiply
    2,218.73x = 3,061.99 × 1,224.01
  4. Step 4: Simplify right side
    2,218.73x = 3,747,906.38
  5. Step 5: Solve for x
    x = 3,747,906.38/2,218.73
  6. Step 6: Final answer
    x = 1,689.21

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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.