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Finding the Fourth Proportional to 3,893.68, 5,374.36 and 2,216

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Solution

The fourth proportional to 3,893.68, 5,374.36 and 2,216 is: 3,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.68 : 5,374.36 = 2,216 : x
  2. Step 2: Convert to fraction form
    3,893.68/5,374.36 = 2,216/x
  3. Step 3: Cross multiply
    3,893.68x = 5,374.36 × 2,216
  4. Step 4: Simplify right side
    3,893.68x = 11,909,581.76
  5. Step 5: Solve for x
    x = 11,909,581.76/3,893.68
  6. Step 6: Final answer
    x = 3,058.70

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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.