Home / 3,721.64-5,578.81-2,405.18

Finding the Fourth Proportional to 3,721.64, 5,578.81 and 2,405.18

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Solution

The fourth proportional to 3,721.64, 5,578.81 and 2,405.18 is: 3,605.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.64 : 5,578.81 = 2,405.18 : x
  2. Step 2: Convert to fraction form
    3,721.64/5,578.81 = 2,405.18/x
  3. Step 3: Cross multiply
    3,721.64x = 5,578.81 × 2,405.18
  4. Step 4: Simplify right side
    3,721.64x = 13,418,050.17
  5. Step 5: Solve for x
    x = 13,418,050.17/3,721.64
  6. Step 6: Final answer
    x = 3,605.42

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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.