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Finding the Fourth Proportional to 7,491, 11,179.54 and 6,660.65

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Solution

The fourth proportional to 7,491, 11,179.54 and 6,660.65 is: 9,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491 : 11,179.54 = 6,660.65 : x
  2. Step 2: Convert to fraction form
    7,491/11,179.54 = 6,660.65/x
  3. Step 3: Cross multiply
    7,491x = 11,179.54 × 6,660.65
  4. Step 4: Simplify right side
    7,491x = 74,463,003.10
  5. Step 5: Solve for x
    x = 74,463,003.10/7,491
  6. Step 6: Final answer
    x = 9,940.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.