Home / 3,581.35-4,942.28-1,988.00

Finding the Fourth Proportional to 3,581.35, 4,942.28 and 1,988.00

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Solution

The fourth proportional to 3,581.35, 4,942.28 and 1,988.00 is: 2,743.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.35 : 4,942.28 = 1,988.00 : x
  2. Step 2: Convert to fraction form
    3,581.35/4,942.28 = 1,988.00/x
  3. Step 3: Cross multiply
    3,581.35x = 4,942.28 × 1,988.00
  4. Step 4: Simplify right side
    3,581.35x = 9,825,251.43
  5. Step 5: Solve for x
    x = 9,825,251.43/3,581.35
  6. Step 6: Final answer
    x = 2,743.45

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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.