Home / 3,489.29-4,815.19-1,917.35

Finding the Fourth Proportional to 3,489.29, 4,815.19 and 1,917.35

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Solution

The fourth proportional to 3,489.29, 4,815.19 and 1,917.35 is: 2,645.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.29 : 4,815.19 = 1,917.35 : x
  2. Step 2: Convert to fraction form
    3,489.29/4,815.19 = 1,917.35/x
  3. Step 3: Cross multiply
    3,489.29x = 4,815.19 × 1,917.35
  4. Step 4: Simplify right side
    3,489.29x = 9,232,404.55
  5. Step 5: Solve for x
    x = 9,232,404.55/3,489.29
  6. Step 6: Final answer
    x = 2,645.93

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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.