Home / 5,119.40-7,669.06-2,655.86

Finding the Fourth Proportional to 5,119.40, 7,669.06 and 2,655.86

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Solution

The fourth proportional to 5,119.40, 7,669.06 and 2,655.86 is: 3,978.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.40 : 7,669.06 = 2,655.86 : x
  2. Step 2: Convert to fraction form
    5,119.40/7,669.06 = 2,655.86/x
  3. Step 3: Cross multiply
    5,119.40x = 7,669.06 × 2,655.86
  4. Step 4: Simplify right side
    5,119.40x = 20,367,949.69
  5. Step 5: Solve for x
    x = 20,367,949.69/5,119.40
  6. Step 6: Final answer
    x = 3,978.58

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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.