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Finding the Fourth Proportional to 3,693.77, 5,540.19 and 1,615.21

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Solution

The fourth proportional to 3,693.77, 5,540.19 and 1,615.21 is: 2,422.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693.77 : 5,540.19 = 1,615.21 : x
  2. Step 2: Convert to fraction form
    3,693.77/5,540.19 = 1,615.21/x
  3. Step 3: Cross multiply
    3,693.77x = 5,540.19 × 1,615.21
  4. Step 4: Simplify right side
    3,693.77x = 8,948,570.29
  5. Step 5: Solve for x
    x = 8,948,570.29/3,693.77
  6. Step 6: Final answer
    x = 2,422.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.