Home / 6,658.20-9,985.68-2,758.86

Finding the Fourth Proportional to 6,658.20, 9,985.68 and 2,758.86

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Solution

The fourth proportional to 6,658.20, 9,985.68 and 2,758.86 is: 4,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,658.20 : 9,985.68 = 2,758.86 : x
  2. Step 2: Convert to fraction form
    6,658.20/9,985.68 = 2,758.86/x
  3. Step 3: Cross multiply
    6,658.20x = 9,985.68 × 2,758.86
  4. Step 4: Simplify right side
    6,658.20x = 27,549,093.12
  5. Step 5: Solve for x
    x = 27,549,093.12/6,658.20
  6. Step 6: Final answer
    x = 4,137.62

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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.