Home / 1,940.12-2,911.17-708.35

Finding the Fourth Proportional to 1,940.12, 2,911.17 and 708.35

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Solution

The fourth proportional to 1,940.12, 2,911.17 and 708.35 is: 1,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.12 : 2,911.17 = 708.35 : x
  2. Step 2: Convert to fraction form
    1,940.12/2,911.17 = 708.35/x
  3. Step 3: Cross multiply
    1,940.12x = 2,911.17 × 708.35
  4. Step 4: Simplify right side
    1,940.12x = 2,062,112.71
  5. Step 5: Solve for x
    x = 2,062,112.71/1,940.12
  6. Step 6: Final answer
    x = 1,062.88

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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.