Home / 1,519.29-2,266.20-1,289.61

Finding the Fourth Proportional to 1,519.29, 2,266.20 and 1,289.61

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Solution

The fourth proportional to 1,519.29, 2,266.20 and 1,289.61 is: 1,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.29 : 2,266.20 = 1,289.61 : x
  2. Step 2: Convert to fraction form
    1,519.29/2,266.20 = 1,289.61/x
  3. Step 3: Cross multiply
    1,519.29x = 2,266.20 × 1,289.61
  4. Step 4: Simplify right side
    1,519.29x = 2,922,514.18
  5. Step 5: Solve for x
    x = 2,922,514.18/1,519.29
  6. Step 6: Final answer
    x = 1,923.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.