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Finding the Fourth Proportional to 6,640.50, 9,960.06 and 4,167.99

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Solution

The fourth proportional to 6,640.50, 9,960.06 and 4,167.99 is: 6,251.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.50 : 9,960.06 = 4,167.99 : x
  2. Step 2: Convert to fraction form
    6,640.50/9,960.06 = 4,167.99/x
  3. Step 3: Cross multiply
    6,640.50x = 9,960.06 × 4,167.99
  4. Step 4: Simplify right side
    6,640.50x = 41,513,430.48
  5. Step 5: Solve for x
    x = 41,513,430.48/6,640.50
  6. Step 6: Final answer
    x = 6,251.55

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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.