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Finding the Fourth Proportional to 7,396.89, 10,150.89 and 6,979.53

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Solution

The fourth proportional to 7,396.89, 10,150.89 and 6,979.53 is: 9,578.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,396.89 : 10,150.89 = 6,979.53 : x
  2. Step 2: Convert to fraction form
    7,396.89/10,150.89 = 6,979.53/x
  3. Step 3: Cross multiply
    7,396.89x = 10,150.89 × 6,979.53
  4. Step 4: Simplify right side
    7,396.89x = 70,848,441.28
  5. Step 5: Solve for x
    x = 70,848,441.28/7,396.89
  6. Step 6: Final answer
    x = 9,578.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.