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Finding the Fourth Proportional to 6,122.56, 9,186.80 and 1,963.20

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Solution

The fourth proportional to 6,122.56, 9,186.80 and 1,963.20 is: 2,945.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,122.56 : 9,186.80 = 1,963.20 : x
  2. Step 2: Convert to fraction form
    6,122.56/9,186.80 = 1,963.20/x
  3. Step 3: Cross multiply
    6,122.56x = 9,186.80 × 1,963.20
  4. Step 4: Simplify right side
    6,122.56x = 18,035,525.76
  5. Step 5: Solve for x
    x = 18,035,525.76/6,122.56
  6. Step 6: Final answer
    x = 2,945.75

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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.