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Finding the Fourth Proportional to 2,765.82, 3,818.25 and 2,134.92

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Solution

The fourth proportional to 2,765.82, 3,818.25 and 2,134.92 is: 2,947.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.82 : 3,818.25 = 2,134.92 : x
  2. Step 2: Convert to fraction form
    2,765.82/3,818.25 = 2,134.92/x
  3. Step 3: Cross multiply
    2,765.82x = 3,818.25 × 2,134.92
  4. Step 4: Simplify right side
    2,765.82x = 8,151,658.29
  5. Step 5: Solve for x
    x = 8,151,658.29/2,765.82
  6. Step 6: Final answer
    x = 2,947.28

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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.