Home / 3,806.64-5,251.68-2,389.50

Finding the Fourth Proportional to 3,806.64, 5,251.68 and 2,389.50

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Solution

The fourth proportional to 3,806.64, 5,251.68 and 2,389.50 is: 3,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.64 : 5,251.68 = 2,389.50 : x
  2. Step 2: Convert to fraction form
    3,806.64/5,251.68 = 2,389.50/x
  3. Step 3: Cross multiply
    3,806.64x = 5,251.68 × 2,389.50
  4. Step 4: Simplify right side
    3,806.64x = 12,548,889.36
  5. Step 5: Solve for x
    x = 12,548,889.36/3,806.64
  6. Step 6: Final answer
    x = 3,296.58

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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.