Home / 3,708.80-5,115.12-2,661.44

Finding the Fourth Proportional to 3,708.80, 5,115.12 and 2,661.44

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Solution

The fourth proportional to 3,708.80, 5,115.12 and 2,661.44 is: 3,670.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.80 : 5,115.12 = 2,661.44 : x
  2. Step 2: Convert to fraction form
    3,708.80/5,115.12 = 2,661.44/x
  3. Step 3: Cross multiply
    3,708.80x = 5,115.12 × 2,661.44
  4. Step 4: Simplify right side
    3,708.80x = 13,613,584.97
  5. Step 5: Solve for x
    x = 13,613,584.97/3,708.80
  6. Step 6: Final answer
    x = 3,670.62

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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.