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Finding the Fourth Proportional to 6,640.64, 9,949.41 and 5,543.49

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Solution

The fourth proportional to 6,640.64, 9,949.41 and 5,543.49 is: 8,305.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.64 : 9,949.41 = 5,543.49 : x
  2. Step 2: Convert to fraction form
    6,640.64/9,949.41 = 5,543.49/x
  3. Step 3: Cross multiply
    6,640.64x = 9,949.41 × 5,543.49
  4. Step 4: Simplify right side
    6,640.64x = 55,154,454.84
  5. Step 5: Solve for x
    x = 55,154,454.84/6,640.64
  6. Step 6: Final answer
    x = 8,305.59

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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.