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Finding the Fourth Proportional to 1,809.83, 2,716.11 and 1,324.13

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Solution

The fourth proportional to 1,809.83, 2,716.11 and 1,324.13 is: 1,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.83 : 2,716.11 = 1,324.13 : x
  2. Step 2: Convert to fraction form
    1,809.83/2,716.11 = 1,324.13/x
  3. Step 3: Cross multiply
    1,809.83x = 2,716.11 × 1,324.13
  4. Step 4: Simplify right side
    1,809.83x = 3,596,480.71
  5. Step 5: Solve for x
    x = 3,596,480.71/1,809.83
  6. Step 6: Final answer
    x = 1,987.20

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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.