Home / 2,265.11-3,121.17-1,821.23

Finding the Fourth Proportional to 2,265.11, 3,121.17 and 1,821.23

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Solution

The fourth proportional to 2,265.11, 3,121.17 and 1,821.23 is: 2,509.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.11 : 3,121.17 = 1,821.23 : x
  2. Step 2: Convert to fraction form
    2,265.11/3,121.17 = 1,821.23/x
  3. Step 3: Cross multiply
    2,265.11x = 3,121.17 × 1,821.23
  4. Step 4: Simplify right side
    2,265.11x = 5,684,368.44
  5. Step 5: Solve for x
    x = 5,684,368.44/2,265.11
  6. Step 6: Final answer
    x = 2,509.53

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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.