Home / 3,979.49-5,969.35-1,899.71

Finding the Fourth Proportional to 3,979.49, 5,969.35 and 1,899.71

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Solution

The fourth proportional to 3,979.49, 5,969.35 and 1,899.71 is: 2,849.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.49 : 5,969.35 = 1,899.71 : x
  2. Step 2: Convert to fraction form
    3,979.49/5,969.35 = 1,899.71/x
  3. Step 3: Cross multiply
    3,979.49x = 5,969.35 × 1,899.71
  4. Step 4: Simplify right side
    3,979.49x = 11,340,033.89
  5. Step 5: Solve for x
    x = 11,340,033.89/3,979.49
  6. Step 6: Final answer
    x = 2,849.62

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1.5x scale

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.