Home / 3,029.81-4,546.65-1,991.90

Finding the Fourth Proportional to 3,029.81, 4,546.65 and 1,991.90

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Solution

The fourth proportional to 3,029.81, 4,546.65 and 1,991.90 is: 2,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,029.81 : 4,546.65 = 1,991.90 : x
  2. Step 2: Convert to fraction form
    3,029.81/4,546.65 = 1,991.90/x
  3. Step 3: Cross multiply
    3,029.81x = 4,546.65 × 1,991.90
  4. Step 4: Simplify right side
    3,029.81x = 9,056,449.40
  5. Step 5: Solve for x
    x = 9,056,449.40/3,029.81
  6. Step 6: Final answer
    x = 2,989.12

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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.