Home / 5,986.80-8,981.96-2,091.51

Finding the Fourth Proportional to 5,986.80, 8,981.96 and 2,091.51

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Solution

The fourth proportional to 5,986.80, 8,981.96 and 2,091.51 is: 3,137.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,986.80 : 8,981.96 = 2,091.51 : x
  2. Step 2: Convert to fraction form
    5,986.80/8,981.96 = 2,091.51/x
  3. Step 3: Cross multiply
    5,986.80x = 8,981.96 × 2,091.51
  4. Step 4: Simplify right side
    5,986.80x = 18,785,848.70
  5. Step 5: Solve for x
    x = 18,785,848.70/5,986.80
  6. Step 6: Final answer
    x = 3,137.88

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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.