Home / 5,450.79-8,179.82-1,988.04

Finding the Fourth Proportional to 5,450.79, 8,179.82 and 1,988.04

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Solution

The fourth proportional to 5,450.79, 8,179.82 and 1,988.04 is: 2,983.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,450.79 : 8,179.82 = 1,988.04 : x
  2. Step 2: Convert to fraction form
    5,450.79/8,179.82 = 1,988.04/x
  3. Step 3: Cross multiply
    5,450.79x = 8,179.82 × 1,988.04
  4. Step 4: Simplify right side
    5,450.79x = 16,261,799.41
  5. Step 5: Solve for x
    x = 16,261,799.41/5,450.79
  6. Step 6: Final answer
    x = 2,983.38

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1.5x scale

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.