Home / 2,188.29-3,020.96-1,689.81

Finding the Fourth Proportional to 2,188.29, 3,020.96 and 1,689.81

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Solution

The fourth proportional to 2,188.29, 3,020.96 and 1,689.81 is: 2,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.29 : 3,020.96 = 1,689.81 : x
  2. Step 2: Convert to fraction form
    2,188.29/3,020.96 = 1,689.81/x
  3. Step 3: Cross multiply
    2,188.29x = 3,020.96 × 1,689.81
  4. Step 4: Simplify right side
    2,188.29x = 5,104,839.97
  5. Step 5: Solve for x
    x = 5,104,839.97/2,188.29
  6. Step 6: Final answer
    x = 2,332.80

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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.