Home / 7,940.40-11,906.36-6,086.92

Finding the Fourth Proportional to 7,940.40, 11,906.36 and 6,086.92

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Solution

The fourth proportional to 7,940.40, 11,906.36 and 6,086.92 is: 9,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.40 : 11,906.36 = 6,086.92 : x
  2. Step 2: Convert to fraction form
    7,940.40/11,906.36 = 6,086.92/x
  3. Step 3: Cross multiply
    7,940.40x = 11,906.36 × 6,086.92
  4. Step 4: Simplify right side
    7,940.40x = 72,473,060.81
  5. Step 5: Solve for x
    x = 72,473,060.81/7,940.40
  6. Step 6: Final answer
    x = 9,127.13

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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.