Home / 3,009.20-4,511.10-1,969.70

Finding the Fourth Proportional to 3,009.20, 4,511.10 and 1,969.70

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Solution

The fourth proportional to 3,009.20, 4,511.10 and 1,969.70 is: 2,952.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.20 : 4,511.10 = 1,969.70 : x
  2. Step 2: Convert to fraction form
    3,009.20/4,511.10 = 1,969.70/x
  3. Step 3: Cross multiply
    3,009.20x = 4,511.10 × 1,969.70
  4. Step 4: Simplify right side
    3,009.20x = 8,885,513.67
  5. Step 5: Solve for x
    x = 8,885,513.67/3,009.20
  6. Step 6: Final answer
    x = 2,952.78

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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.