Home / 1,689.29-2,331.26-943.22

Finding the Fourth Proportional to 1,689.29, 2,331.26 and 943.22

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Solution

The fourth proportional to 1,689.29, 2,331.26 and 943.22 is: 1,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.29 : 2,331.26 = 943.22 : x
  2. Step 2: Convert to fraction form
    1,689.29/2,331.26 = 943.22/x
  3. Step 3: Cross multiply
    1,689.29x = 2,331.26 × 943.22
  4. Step 4: Simplify right side
    1,689.29x = 2,198,886.34
  5. Step 5: Solve for x
    x = 2,198,886.34/1,689.29
  6. Step 6: Final answer
    x = 1,301.66

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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.