Home / 3,581.81-4,942.84-1,988.45

Finding the Fourth Proportional to 3,581.81, 4,942.84 and 1,988.45

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Solution

The fourth proportional to 3,581.81, 4,942.84 and 1,988.45 is: 2,744.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.81 : 4,942.84 = 1,988.45 : x
  2. Step 2: Convert to fraction form
    3,581.81/4,942.84 = 1,988.45/x
  3. Step 3: Cross multiply
    3,581.81x = 4,942.84 × 1,988.45
  4. Step 4: Simplify right side
    3,581.81x = 9,828,590.20
  5. Step 5: Solve for x
    x = 9,828,590.20/3,581.81
  6. Step 6: Final answer
    x = 2,744.03

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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.