Home / 7,946.78-11,912.67-3,784.59

Finding the Fourth Proportional to 7,946.78, 11,912.67 and 3,784.59

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Solution

The fourth proportional to 7,946.78, 11,912.67 and 3,784.59 is: 5,673.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,946.78 : 11,912.67 = 3,784.59 : x
  2. Step 2: Convert to fraction form
    7,946.78/11,912.67 = 3,784.59/x
  3. Step 3: Cross multiply
    7,946.78x = 11,912.67 × 3,784.59
  4. Step 4: Simplify right side
    7,946.78x = 45,084,571.76
  5. Step 5: Solve for x
    x = 45,084,571.76/7,946.78
  6. Step 6: Final answer
    x = 5,673.32

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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.