Home / 3,411.92-5,118.20-2,643.28

Finding the Fourth Proportional to 3,411.92, 5,118.20 and 2,643.28

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Solution

The fourth proportional to 3,411.92, 5,118.20 and 2,643.28 is: 3,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.92 : 5,118.20 = 2,643.28 : x
  2. Step 2: Convert to fraction form
    3,411.92/5,118.20 = 2,643.28/x
  3. Step 3: Cross multiply
    3,411.92x = 5,118.20 × 2,643.28
  4. Step 4: Simplify right side
    3,411.92x = 13,528,835.70
  5. Step 5: Solve for x
    x = 13,528,835.70/3,411.92
  6. Step 6: Final answer
    x = 3,965.17

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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.