Home / 3,983.54-5,493.80-2,787.92

Finding the Fourth Proportional to 3,983.54, 5,493.80 and 2,787.92

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Solution

The fourth proportional to 3,983.54, 5,493.80 and 2,787.92 is: 3,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,983.54 : 5,493.80 = 2,787.92 : x
  2. Step 2: Convert to fraction form
    3,983.54/5,493.80 = 2,787.92/x
  3. Step 3: Cross multiply
    3,983.54x = 5,493.80 × 2,787.92
  4. Step 4: Simplify right side
    3,983.54x = 15,316,254.40
  5. Step 5: Solve for x
    x = 15,316,254.40/3,983.54
  6. Step 6: Final answer
    x = 3,844.89

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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.