Home / 3,919.04-5,405.92-2,521.28

Finding the Fourth Proportional to 3,919.04, 5,405.92 and 2,521.28

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Solution

The fourth proportional to 3,919.04, 5,405.92 and 2,521.28 is: 3,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.04 : 5,405.92 = 2,521.28 : x
  2. Step 2: Convert to fraction form
    3,919.04/5,405.92 = 2,521.28/x
  3. Step 3: Cross multiply
    3,919.04x = 5,405.92 × 2,521.28
  4. Step 4: Simplify right side
    3,919.04x = 13,629,837.98
  5. Step 5: Solve for x
    x = 13,629,837.98/3,919.04
  6. Step 6: Final answer
    x = 3,477.85

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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.