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Finding the Fourth Proportional to 7,318.76, 10,980.60 and 2,321.95

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Solution

The fourth proportional to 7,318.76, 10,980.60 and 2,321.95 is: 3,483.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.76 : 10,980.60 = 2,321.95 : x
  2. Step 2: Convert to fraction form
    7,318.76/10,980.60 = 2,321.95/x
  3. Step 3: Cross multiply
    7,318.76x = 10,980.60 × 2,321.95
  4. Step 4: Simplify right side
    7,318.76x = 25,496,404.17
  5. Step 5: Solve for x
    x = 25,496,404.17/7,318.76
  6. Step 6: Final answer
    x = 3,483.71

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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.