Home / 7,940.66-11,911.41-2,097.11

Finding the Fourth Proportional to 7,940.66, 11,911.41 and 2,097.11

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Solution

The fourth proportional to 7,940.66, 11,911.41 and 2,097.11 is: 3,145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.66 : 11,911.41 = 2,097.11 : x
  2. Step 2: Convert to fraction form
    7,940.66/11,911.41 = 2,097.11/x
  3. Step 3: Cross multiply
    7,940.66x = 11,911.41 × 2,097.11
  4. Step 4: Simplify right side
    7,940.66x = 24,979,477.47
  5. Step 5: Solve for x
    x = 24,979,477.47/7,940.66
  6. Step 6: Final answer
    x = 3,145.77

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1.5x scale

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.