Home / 1,979.10-2,965.05-1,208.70

Finding the Fourth Proportional to 1,979.10, 2,965.05 and 1,208.70

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Solution

The fourth proportional to 1,979.10, 2,965.05 and 1,208.70 is: 1,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.10 : 2,965.05 = 1,208.70 : x
  2. Step 2: Convert to fraction form
    1,979.10/2,965.05 = 1,208.70/x
  3. Step 3: Cross multiply
    1,979.10x = 2,965.05 × 1,208.70
  4. Step 4: Simplify right side
    1,979.10x = 3,583,855.94
  5. Step 5: Solve for x
    x = 3,583,855.94/1,979.10
  6. Step 6: Final answer
    x = 1,810.85

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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.