Home / 3,489.24-4,815.10-1,917.30

Finding the Fourth Proportional to 3,489.24, 4,815.10 and 1,917.30

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Solution

The fourth proportional to 3,489.24, 4,815.10 and 1,917.30 is: 2,645.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.24 : 4,815.10 = 1,917.30 : x
  2. Step 2: Convert to fraction form
    3,489.24/4,815.10 = 1,917.30/x
  3. Step 3: Cross multiply
    3,489.24x = 4,815.10 × 1,917.30
  4. Step 4: Simplify right side
    3,489.24x = 9,231,981.64
  5. Step 5: Solve for x
    x = 9,231,981.64/3,489.24
  6. Step 6: Final answer
    x = 2,645.84

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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.