Home / 1,815.66-2,717.28-1,122.03

Finding the Fourth Proportional to 1,815.66, 2,717.28 and 1,122.03

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Solution

The fourth proportional to 1,815.66, 2,717.28 and 1,122.03 is: 1,679.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.66 : 2,717.28 = 1,122.03 : x
  2. Step 2: Convert to fraction form
    1,815.66/2,717.28 = 1,122.03/x
  3. Step 3: Cross multiply
    1,815.66x = 2,717.28 × 1,122.03
  4. Step 4: Simplify right side
    1,815.66x = 3,048,869.68
  5. Step 5: Solve for x
    x = 3,048,869.68/1,815.66
  6. Step 6: Final answer
    x = 1,679.21

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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.