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Finding the Fourth Proportional to 2,748.56, 3,790.31 and 2,520.90

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Solution

The fourth proportional to 2,748.56, 3,790.31 and 2,520.90 is: 3,476.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.56 : 3,790.31 = 2,520.90 : x
  2. Step 2: Convert to fraction form
    2,748.56/3,790.31 = 2,520.90/x
  3. Step 3: Cross multiply
    2,748.56x = 3,790.31 × 2,520.90
  4. Step 4: Simplify right side
    2,748.56x = 9,554,979.87
  5. Step 5: Solve for x
    x = 9,554,979.87/2,748.56
  6. Step 6: Final answer
    x = 3,476.36

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1.5x scale

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.