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Finding the Fourth Proportional to 2,659.70, 3,985.50 and 1,826.22

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Solution

The fourth proportional to 2,659.70, 3,985.50 and 1,826.22 is: 2,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.70 : 3,985.50 = 1,826.22 : x
  2. Step 2: Convert to fraction form
    2,659.70/3,985.50 = 1,826.22/x
  3. Step 3: Cross multiply
    2,659.70x = 3,985.50 × 1,826.22
  4. Step 4: Simplify right side
    2,659.70x = 7,278,399.81
  5. Step 5: Solve for x
    x = 7,278,399.81/2,659.70
  6. Step 6: Final answer
    x = 2,736.55

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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.