Home / 1,689.31-2,330.98-943.14

Finding the Fourth Proportional to 1,689.31, 2,330.98 and 943.14

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Solution

The fourth proportional to 1,689.31, 2,330.98 and 943.14 is: 1,301.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.31 : 2,330.98 = 943.14 : x
  2. Step 2: Convert to fraction form
    1,689.31/2,330.98 = 943.14/x
  3. Step 3: Cross multiply
    1,689.31x = 2,330.98 × 943.14
  4. Step 4: Simplify right side
    1,689.31x = 2,198,446.86
  5. Step 5: Solve for x
    x = 2,198,446.86/1,689.31
  6. Step 6: Final answer
    x = 1,301.39

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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.