Home / 3,813.18-5,720.49-1,215.42

Finding the Fourth Proportional to 3,813.18, 5,720.49 and 1,215.42

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Solution

The fourth proportional to 3,813.18, 5,720.49 and 1,215.42 is: 1,823.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.18 : 5,720.49 = 1,215.42 : x
  2. Step 2: Convert to fraction form
    3,813.18/5,720.49 = 1,215.42/x
  3. Step 3: Cross multiply
    3,813.18x = 5,720.49 × 1,215.42
  4. Step 4: Simplify right side
    3,813.18x = 6,952,797.96
  5. Step 5: Solve for x
    x = 6,952,797.96/3,813.18
  6. Step 6: Final answer
    x = 1,823.36

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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.