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Finding the Fourth Proportional to 2,661.12, 3,672.08 and 1,613.12

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Solution

The fourth proportional to 2,661.12, 3,672.08 and 1,613.12 is: 2,225.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.12 : 3,672.08 = 1,613.12 : x
  2. Step 2: Convert to fraction form
    2,661.12/3,672.08 = 1,613.12/x
  3. Step 3: Cross multiply
    2,661.12x = 3,672.08 × 1,613.12
  4. Step 4: Simplify right side
    2,661.12x = 5,923,505.69
  5. Step 5: Solve for x
    x = 5,923,505.69/2,661.12
  6. Step 6: Final answer
    x = 2,225.94

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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.