Home / 7,777.27-11,669.34-4,078.61

Finding the Fourth Proportional to 7,777.27, 11,669.34 and 4,078.61

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Solution

The fourth proportional to 7,777.27, 11,669.34 and 4,078.61 is: 6,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.27 : 11,669.34 = 4,078.61 : x
  2. Step 2: Convert to fraction form
    7,777.27/11,669.34 = 4,078.61/x
  3. Step 3: Cross multiply
    7,777.27x = 11,669.34 × 4,078.61
  4. Step 4: Simplify right side
    7,777.27x = 47,594,686.82
  5. Step 5: Solve for x
    x = 47,594,686.82/7,777.27
  6. Step 6: Final answer
    x = 6,119.72

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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.