Home / 1,949.99-2,690.94-1,065.80

Finding the Fourth Proportional to 1,949.99, 2,690.94 and 1,065.80

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Solution

The fourth proportional to 1,949.99, 2,690.94 and 1,065.80 is: 1,470.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.99 : 2,690.94 = 1,065.80 : x
  2. Step 2: Convert to fraction form
    1,949.99/2,690.94 = 1,065.80/x
  3. Step 3: Cross multiply
    1,949.99x = 2,690.94 × 1,065.80
  4. Step 4: Simplify right side
    1,949.99x = 2,868,003.85
  5. Step 5: Solve for x
    x = 2,868,003.85/1,949.99
  6. Step 6: Final answer
    x = 1,470.78

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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.