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Finding the Fourth Proportional to 2,652.70, 3,979.73 and 2,485.94

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Solution

The fourth proportional to 2,652.70, 3,979.73 and 2,485.94 is: 3,729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.70 : 3,979.73 = 2,485.94 : x
  2. Step 2: Convert to fraction form
    2,652.70/3,979.73 = 2,485.94/x
  3. Step 3: Cross multiply
    2,652.70x = 3,979.73 × 2,485.94
  4. Step 4: Simplify right side
    2,652.70x = 9,893,378.70
  5. Step 5: Solve for x
    x = 9,893,378.70/2,652.70
  6. Step 6: Final answer
    x = 3,729.55

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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.