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Finding the Fourth Proportional to 7,956.36, 10,974.24 and 6,464.28

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Solution

The fourth proportional to 7,956.36, 10,974.24 and 6,464.28 is: 8,916.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.36 : 10,974.24 = 6,464.28 : x
  2. Step 2: Convert to fraction form
    7,956.36/10,974.24 = 6,464.28/x
  3. Step 3: Cross multiply
    7,956.36x = 10,974.24 × 6,464.28
  4. Step 4: Simplify right side
    7,956.36x = 70,940,560.15
  5. Step 5: Solve for x
    x = 70,940,560.15/7,956.36
  6. Step 6: Final answer
    x = 8,916.21

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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.