Home / 2,386.43-3,579.71-2,279.81

Finding the Fourth Proportional to 2,386.43, 3,579.71 and 2,279.81

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Solution

The fourth proportional to 2,386.43, 3,579.71 and 2,279.81 is: 3,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.43 : 3,579.71 = 2,279.81 : x
  2. Step 2: Convert to fraction form
    2,386.43/3,579.71 = 2,279.81/x
  3. Step 3: Cross multiply
    2,386.43x = 3,579.71 × 2,279.81
  4. Step 4: Simplify right side
    2,386.43x = 8,161,058.66
  5. Step 5: Solve for x
    x = 8,161,058.66/2,386.43
  6. Step 6: Final answer
    x = 3,419.78

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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.