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Finding the Fourth Proportional to 7,944.30, 10,940.94 and 7,772.11

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Solution

The fourth proportional to 7,944.30, 10,940.94 and 7,772.11 is: 10,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,944.30 : 10,940.94 = 7,772.11 : x
  2. Step 2: Convert to fraction form
    7,944.30/10,940.94 = 7,772.11/x
  3. Step 3: Cross multiply
    7,944.30x = 10,940.94 × 7,772.11
  4. Step 4: Simplify right side
    7,944.30x = 85,034,161.83
  5. Step 5: Solve for x
    x = 85,034,161.83/7,944.30
  6. Step 6: Final answer
    x = 10,703.80

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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.