Home / 7,679.95-11,518.74-2,132.70

Finding the Fourth Proportional to 7,679.95, 11,518.74 and 2,132.70

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Solution

The fourth proportional to 7,679.95, 11,518.74 and 2,132.70 is: 3,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.95 : 11,518.74 = 2,132.70 : x
  2. Step 2: Convert to fraction form
    7,679.95/11,518.74 = 2,132.70/x
  3. Step 3: Cross multiply
    7,679.95x = 11,518.74 × 2,132.70
  4. Step 4: Simplify right side
    7,679.95x = 24,565,973.60
  5. Step 5: Solve for x
    x = 24,565,973.60/7,679.95
  6. Step 6: Final answer
    x = 3,198.72

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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.