Home / 3,581.21-4,942.35-1,988.36

Finding the Fourth Proportional to 3,581.21, 4,942.35 and 1,988.36

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Solution

The fourth proportional to 3,581.21, 4,942.35 and 1,988.36 is: 2,744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.21 : 4,942.35 = 1,988.36 : x
  2. Step 2: Convert to fraction form
    3,581.21/4,942.35 = 1,988.36/x
  3. Step 3: Cross multiply
    3,581.21x = 4,942.35 × 1,988.36
  4. Step 4: Simplify right side
    3,581.21x = 9,827,171.05
  5. Step 5: Solve for x
    x = 9,827,171.05/3,581.21
  6. Step 6: Final answer
    x = 2,744.09

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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.