Home / 3,815.24-5,721.51-1,813.68

Finding the Fourth Proportional to 3,815.24, 5,721.51 and 1,813.68

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Solution

The fourth proportional to 3,815.24, 5,721.51 and 1,813.68 is: 2,719.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.24 : 5,721.51 = 1,813.68 : x
  2. Step 2: Convert to fraction form
    3,815.24/5,721.51 = 1,813.68/x
  3. Step 3: Cross multiply
    3,815.24x = 5,721.51 × 1,813.68
  4. Step 4: Simplify right side
    3,815.24x = 10,376,988.26
  5. Step 5: Solve for x
    x = 10,376,988.26/3,815.24
  6. Step 6: Final answer
    x = 2,719.88

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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.