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Finding the Fourth Proportional to 2,709.88, 3,739.68 and 1,530.97

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Solution

The fourth proportional to 2,709.88, 3,739.68 and 1,530.97 is: 2,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.88 : 3,739.68 = 1,530.97 : x
  2. Step 2: Convert to fraction form
    2,709.88/3,739.68 = 1,530.97/x
  3. Step 3: Cross multiply
    2,709.88x = 3,739.68 × 1,530.97
  4. Step 4: Simplify right side
    2,709.88x = 5,725,328.54
  5. Step 5: Solve for x
    x = 5,725,328.54/2,709.88
  6. Step 6: Final answer
    x = 2,112.76

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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.