Home / 8,190.72-11,296.80-5,673.78

Finding the Fourth Proportional to 8,190.72, 11,296.80 and 5,673.78

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Solution

The fourth proportional to 8,190.72, 11,296.80 and 5,673.78 is: 7,825.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.72 : 11,296.80 = 5,673.78 : x
  2. Step 2: Convert to fraction form
    8,190.72/11,296.80 = 5,673.78/x
  3. Step 3: Cross multiply
    8,190.72x = 11,296.80 × 5,673.78
  4. Step 4: Simplify right side
    8,190.72x = 64,095,557.90
  5. Step 5: Solve for x
    x = 64,095,557.90/8,190.72
  6. Step 6: Final answer
    x = 7,825.39

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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.