Home / 1,983.11-2,971.89-1,689.08

Finding the Fourth Proportional to 1,983.11, 2,971.89 and 1,689.08

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Solution

The fourth proportional to 1,983.11, 2,971.89 and 1,689.08 is: 2,531.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.11 : 2,971.89 = 1,689.08 : x
  2. Step 2: Convert to fraction form
    1,983.11/2,971.89 = 1,689.08/x
  3. Step 3: Cross multiply
    1,983.11x = 2,971.89 × 1,689.08
  4. Step 4: Simplify right side
    1,983.11x = 5,019,745.10
  5. Step 5: Solve for x
    x = 5,019,745.10/1,983.11
  6. Step 6: Final answer
    x = 2,531.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.