Home / 3,681.14-5,079.78-2,189.03

Finding the Fourth Proportional to 3,681.14, 5,079.78 and 2,189.03

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Solution

The fourth proportional to 3,681.14, 5,079.78 and 2,189.03 is: 3,020.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.14 : 5,079.78 = 2,189.03 : x
  2. Step 2: Convert to fraction form
    3,681.14/5,079.78 = 2,189.03/x
  3. Step 3: Cross multiply
    3,681.14x = 5,079.78 × 2,189.03
  4. Step 4: Simplify right side
    3,681.14x = 11,119,790.81
  5. Step 5: Solve for x
    x = 11,119,790.81/3,681.14
  6. Step 6: Final answer
    x = 3,020.75

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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.