Home / 3,459.89-5,186.64-1,379.39

Finding the Fourth Proportional to 3,459.89, 5,186.64 and 1,379.39

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Solution

The fourth proportional to 3,459.89, 5,186.64 and 1,379.39 is: 2,067.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.89 : 5,186.64 = 1,379.39 : x
  2. Step 2: Convert to fraction form
    3,459.89/5,186.64 = 1,379.39/x
  3. Step 3: Cross multiply
    3,459.89x = 5,186.64 × 1,379.39
  4. Step 4: Simplify right side
    3,459.89x = 7,154,407.76
  5. Step 5: Solve for x
    x = 7,154,407.76/3,459.89
  6. Step 6: Final answer
    x = 2,067.82

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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.