Home / 3,787.68-5,228.48-3,664.64

Finding the Fourth Proportional to 3,787.68, 5,228.48 and 3,664.64

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Solution

The fourth proportional to 3,787.68, 5,228.48 and 3,664.64 is: 5,058.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.68 : 5,228.48 = 3,664.64 : x
  2. Step 2: Convert to fraction form
    3,787.68/5,228.48 = 3,664.64/x
  3. Step 3: Cross multiply
    3,787.68x = 5,228.48 × 3,664.64
  4. Step 4: Simplify right side
    3,787.68x = 19,160,496.95
  5. Step 5: Solve for x
    x = 19,160,496.95/3,787.68
  6. Step 6: Final answer
    x = 5,058.64

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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.