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Finding the Fourth Proportional to 7,963.99, 11,932.70 and 5,620.16

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Solution

The fourth proportional to 7,963.99, 11,932.70 and 5,620.16 is: 8,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.99 : 11,932.70 = 5,620.16 : x
  2. Step 2: Convert to fraction form
    7,963.99/11,932.70 = 5,620.16/x
  3. Step 3: Cross multiply
    7,963.99x = 11,932.70 × 5,620.16
  4. Step 4: Simplify right side
    7,963.99x = 67,063,684.96
  5. Step 5: Solve for x
    x = 67,063,684.96/7,963.99
  6. Step 6: Final answer
    x = 8,420.87

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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.