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Finding the Fourth Proportional to 2,827.84, 3,893.92 and 2,236.48

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Solution

The fourth proportional to 2,827.84, 3,893.92 and 2,236.48 is: 3,079.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,827.84 : 3,893.92 = 2,236.48 : x
  2. Step 2: Convert to fraction form
    2,827.84/3,893.92 = 2,236.48/x
  3. Step 3: Cross multiply
    2,827.84x = 3,893.92 × 2,236.48
  4. Step 4: Simplify right side
    2,827.84x = 8,708,674.20
  5. Step 5: Solve for x
    x = 8,708,674.20/2,827.84
  6. Step 6: Final answer
    x = 3,079.62

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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.