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Finding the Fourth Proportional to 2,827.14, 4,240.92 and 879.48

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Solution

The fourth proportional to 2,827.14, 4,240.92 and 879.48 is: 1,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,827.14 : 4,240.92 = 879.48 : x
  2. Step 2: Convert to fraction form
    2,827.14/4,240.92 = 879.48/x
  3. Step 3: Cross multiply
    2,827.14x = 4,240.92 × 879.48
  4. Step 4: Simplify right side
    2,827.14x = 3,729,804.32
  5. Step 5: Solve for x
    x = 3,729,804.32/2,827.14
  6. Step 6: Final answer
    x = 1,319.29

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1.5x scale

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.