Home / 2,168.71-2,992.75-1,224.48

Finding the Fourth Proportional to 2,168.71, 2,992.75 and 1,224.48

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Solution

The fourth proportional to 2,168.71, 2,992.75 and 1,224.48 is: 1,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.71 : 2,992.75 = 1,224.48 : x
  2. Step 2: Convert to fraction form
    2,168.71/2,992.75 = 1,224.48/x
  3. Step 3: Cross multiply
    2,168.71x = 2,992.75 × 1,224.48
  4. Step 4: Simplify right side
    2,168.71x = 3,664,565.07
  5. Step 5: Solve for x
    x = 3,664,565.07/2,168.71
  6. Step 6: Final answer
    x = 1,689.75

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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.