Home / 3,428.32-5,144.64-1,787.80

Finding the Fourth Proportional to 3,428.32, 5,144.64 and 1,787.80

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Solution

The fourth proportional to 3,428.32, 5,144.64 and 1,787.80 is: 2,682.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.32 : 5,144.64 = 1,787.80 : x
  2. Step 2: Convert to fraction form
    3,428.32/5,144.64 = 1,787.80/x
  3. Step 3: Cross multiply
    3,428.32x = 5,144.64 × 1,787.80
  4. Step 4: Simplify right side
    3,428.32x = 9,197,587.39
  5. Step 5: Solve for x
    x = 9,197,587.39/3,428.32
  6. Step 6: Final answer
    x = 2,682.83

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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.