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Finding the Fourth Proportional to 6,659.11, 9,990.99 and 2,960.99

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Solution

The fourth proportional to 6,659.11, 9,990.99 and 2,960.99 is: 4,442.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.11 : 9,990.99 = 2,960.99 : x
  2. Step 2: Convert to fraction form
    6,659.11/9,990.99 = 2,960.99/x
  3. Step 3: Cross multiply
    6,659.11x = 9,990.99 × 2,960.99
  4. Step 4: Simplify right side
    6,659.11x = 29,583,156.72
  5. Step 5: Solve for x
    x = 29,583,156.72/6,659.11
  6. Step 6: Final answer
    x = 4,442.51

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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.