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Finding the Fourth Proportional to 7,839.03, 10,811.53 and 6,892.85

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Solution

The fourth proportional to 7,839.03, 10,811.53 and 6,892.85 is: 9,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.03 : 10,811.53 = 6,892.85 : x
  2. Step 2: Convert to fraction form
    7,839.03/10,811.53 = 6,892.85/x
  3. Step 3: Cross multiply
    7,839.03x = 10,811.53 × 6,892.85
  4. Step 4: Simplify right side
    7,839.03x = 74,522,190.62
  5. Step 5: Solve for x
    x = 74,522,190.62/7,839.03
  6. Step 6: Final answer
    x = 9,506.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.