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Finding the Fourth Proportional to 6,601.62, 9,888.64 and 3,960.74

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Solution

The fourth proportional to 6,601.62, 9,888.64 and 3,960.74 is: 5,932.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,601.62 : 9,888.64 = 3,960.74 : x
  2. Step 2: Convert to fraction form
    6,601.62/9,888.64 = 3,960.74/x
  3. Step 3: Cross multiply
    6,601.62x = 9,888.64 × 3,960.74
  4. Step 4: Simplify right side
    6,601.62x = 39,166,331.99
  5. Step 5: Solve for x
    x = 39,166,331.99/6,601.62
  6. Step 6: Final answer
    x = 5,932.84

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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.