Home / 1,812.91-2,720.14-1,228.57

Finding the Fourth Proportional to 1,812.91, 2,720.14 and 1,228.57

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Solution

The fourth proportional to 1,812.91, 2,720.14 and 1,228.57 is: 1,843.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.91 : 2,720.14 = 1,228.57 : x
  2. Step 2: Convert to fraction form
    1,812.91/2,720.14 = 1,228.57/x
  3. Step 3: Cross multiply
    1,812.91x = 2,720.14 × 1,228.57
  4. Step 4: Simplify right side
    1,812.91x = 3,341,882.40
  5. Step 5: Solve for x
    x = 3,341,882.40/1,812.91
  6. Step 6: Final answer
    x = 1,843.38

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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.