Home / 7,986.32-11,977.22-4,778.52

Finding the Fourth Proportional to 7,986.32, 11,977.22 and 4,778.52

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Solution

The fourth proportional to 7,986.32, 11,977.22 and 4,778.52 is: 7,166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.32 : 11,977.22 = 4,778.52 : x
  2. Step 2: Convert to fraction form
    7,986.32/11,977.22 = 4,778.52/x
  3. Step 3: Cross multiply
    7,986.32x = 11,977.22 × 4,778.52
  4. Step 4: Simplify right side
    7,986.32x = 57,233,385.31
  5. Step 5: Solve for x
    x = 57,233,385.31/7,986.32
  6. Step 6: Final answer
    x = 7,166.43

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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.