Home / 3,986.10-5,979.15-2,017.80

Finding the Fourth Proportional to 3,986.10, 5,979.15 and 2,017.80

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Solution

The fourth proportional to 3,986.10, 5,979.15 and 2,017.80 is: 3,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.10 : 5,979.15 = 2,017.80 : x
  2. Step 2: Convert to fraction form
    3,986.10/5,979.15 = 2,017.80/x
  3. Step 3: Cross multiply
    3,986.10x = 5,979.15 × 2,017.80
  4. Step 4: Simplify right side
    3,986.10x = 12,064,728.87
  5. Step 5: Solve for x
    x = 12,064,728.87/3,986.10
  6. Step 6: Final answer
    x = 3,026.70

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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.