Home / 3,681.48-5,079.84-2,189.18

Finding the Fourth Proportional to 3,681.48, 5,079.84 and 2,189.18

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Solution

The fourth proportional to 3,681.48, 5,079.84 and 2,189.18 is: 3,020.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.48 : 5,079.84 = 2,189.18 : x
  2. Step 2: Convert to fraction form
    3,681.48/5,079.84 = 2,189.18/x
  3. Step 3: Cross multiply
    3,681.48x = 5,079.84 × 2,189.18
  4. Step 4: Simplify right side
    3,681.48x = 11,120,684.13
  5. Step 5: Solve for x
    x = 11,120,684.13/3,681.48
  6. Step 6: Final answer
    x = 3,020.71

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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.