Home / 3,581.66-4,942.61-1,988.21

Finding the Fourth Proportional to 3,581.66, 4,942.61 and 1,988.21

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Solution

The fourth proportional to 3,581.66, 4,942.61 and 1,988.21 is: 2,743.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.66 : 4,942.61 = 1,988.21 : x
  2. Step 2: Convert to fraction form
    3,581.66/4,942.61 = 1,988.21/x
  3. Step 3: Cross multiply
    3,581.66x = 4,942.61 × 1,988.21
  4. Step 4: Simplify right side
    3,581.66x = 9,826,911.97
  5. Step 5: Solve for x
    x = 9,826,911.97/3,581.66
  6. Step 6: Final answer
    x = 2,743.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.