Home / 3,987.10-5,969.70-2,029.75

Finding the Fourth Proportional to 3,987.10, 5,969.70 and 2,029.75

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Solution

The fourth proportional to 3,987.10, 5,969.70 and 2,029.75 is: 3,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.10 : 5,969.70 = 2,029.75 : x
  2. Step 2: Convert to fraction form
    3,987.10/5,969.70 = 2,029.75/x
  3. Step 3: Cross multiply
    3,987.10x = 5,969.70 × 2,029.75
  4. Step 4: Simplify right side
    3,987.10x = 12,116,998.58
  5. Step 5: Solve for x
    x = 12,116,998.58/3,987.10
  6. Step 6: Final answer
    x = 3,039.05

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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.