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Finding the Fourth Proportional to 7,338.55, 10,989.03 and 4,047.99

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Solution

The fourth proportional to 7,338.55, 10,989.03 and 4,047.99 is: 6,061.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.55 : 10,989.03 = 4,047.99 : x
  2. Step 2: Convert to fraction form
    7,338.55/10,989.03 = 4,047.99/x
  3. Step 3: Cross multiply
    7,338.55x = 10,989.03 × 4,047.99
  4. Step 4: Simplify right side
    7,338.55x = 44,483,428.60
  5. Step 5: Solve for x
    x = 44,483,428.60/7,338.55
  6. Step 6: Final answer
    x = 6,061.61

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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.