Home / 2,809.12-3,876.78-2,433.28

Finding the Fourth Proportional to 2,809.12, 3,876.78 and 2,433.28

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Solution

The fourth proportional to 2,809.12, 3,876.78 and 2,433.28 is: 3,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.12 : 3,876.78 = 2,433.28 : x
  2. Step 2: Convert to fraction form
    2,809.12/3,876.78 = 2,433.28/x
  3. Step 3: Cross multiply
    2,809.12x = 3,876.78 × 2,433.28
  4. Step 4: Simplify right side
    2,809.12x = 9,433,291.24
  5. Step 5: Solve for x
    x = 9,433,291.24/2,809.12
  6. Step 6: Final answer
    x = 3,358.09

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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.