Home / 2,869.90-3,961.32-1,691.35

Finding the Fourth Proportional to 2,869.90, 3,961.32 and 1,691.35

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Solution

The fourth proportional to 2,869.90, 3,961.32 and 1,691.35 is: 2,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.90 : 3,961.32 = 1,691.35 : x
  2. Step 2: Convert to fraction form
    2,869.90/3,961.32 = 1,691.35/x
  3. Step 3: Cross multiply
    2,869.90x = 3,961.32 × 1,691.35
  4. Step 4: Simplify right side
    2,869.90x = 6,699,978.58
  5. Step 5: Solve for x
    x = 6,699,978.58/2,869.90
  6. Step 6: Final answer
    x = 2,334.57

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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.