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Finding the Fourth Proportional to 6,439.11, 9,660.11 and 3,477.49

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Solution

The fourth proportional to 6,439.11, 9,660.11 and 3,477.49 is: 5,217.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.11 : 9,660.11 = 3,477.49 : x
  2. Step 2: Convert to fraction form
    6,439.11/9,660.11 = 3,477.49/x
  3. Step 3: Cross multiply
    6,439.11x = 9,660.11 × 3,477.49
  4. Step 4: Simplify right side
    6,439.11x = 33,592,870.24
  5. Step 5: Solve for x
    x = 33,592,870.24/6,439.11
  6. Step 6: Final answer
    x = 5,217.01

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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.