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Finding the Fourth Proportional to 6,640.84, 9,960.72 and 2,480.68

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Solution

The fourth proportional to 6,640.84, 9,960.72 and 2,480.68 is: 3,720.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.84 : 9,960.72 = 2,480.68 : x
  2. Step 2: Convert to fraction form
    6,640.84/9,960.72 = 2,480.68/x
  3. Step 3: Cross multiply
    6,640.84x = 9,960.72 × 2,480.68
  4. Step 4: Simplify right side
    6,640.84x = 24,709,358.89
  5. Step 5: Solve for x
    x = 24,709,358.89/6,640.84
  6. Step 6: Final answer
    x = 3,720.82

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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.