Home / 3,613.86-5,415.90-2,681.88

Finding the Fourth Proportional to 3,613.86, 5,415.90 and 2,681.88

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Solution

The fourth proportional to 3,613.86, 5,415.90 and 2,681.88 is: 4,019.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.86 : 5,415.90 = 2,681.88 : x
  2. Step 2: Convert to fraction form
    3,613.86/5,415.90 = 2,681.88/x
  3. Step 3: Cross multiply
    3,613.86x = 5,415.90 × 2,681.88
  4. Step 4: Simplify right side
    3,613.86x = 14,524,793.89
  5. Step 5: Solve for x
    x = 14,524,793.89/3,613.86
  6. Step 6: Final answer
    x = 4,019.19

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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.