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Finding the Fourth Proportional to 7,805.52, 11,708.22 and 3,185.28

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Solution

The fourth proportional to 7,805.52, 11,708.22 and 3,185.28 is: 4,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.52 : 11,708.22 = 3,185.28 : x
  2. Step 2: Convert to fraction form
    7,805.52/11,708.22 = 3,185.28/x
  3. Step 3: Cross multiply
    7,805.52x = 11,708.22 × 3,185.28
  4. Step 4: Simplify right side
    7,805.52x = 37,293,959.00
  5. Step 5: Solve for x
    x = 37,293,959.00/7,805.52
  6. Step 6: Final answer
    x = 4,777.90

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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.