Home / 1,961.88-2,689.85-1,926.81

Finding the Fourth Proportional to 1,961.88, 2,689.85 and 1,926.81

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Solution

The fourth proportional to 1,961.88, 2,689.85 and 1,926.81 is: 2,641.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.88 : 2,689.85 = 1,926.81 : x
  2. Step 2: Convert to fraction form
    1,961.88/2,689.85 = 1,926.81/x
  3. Step 3: Cross multiply
    1,961.88x = 2,689.85 × 1,926.81
  4. Step 4: Simplify right side
    1,961.88x = 5,182,820.24
  5. Step 5: Solve for x
    x = 5,182,820.24/1,961.88
  6. Step 6: Final answer
    x = 2,641.76

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.