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Finding the Fourth Proportional to 6,630.44, 9,940.64 and 5,716.76

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Solution

The fourth proportional to 6,630.44, 9,940.64 and 5,716.76 is: 8,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.44 : 9,940.64 = 5,716.76 : x
  2. Step 2: Convert to fraction form
    6,630.44/9,940.64 = 5,716.76/x
  3. Step 3: Cross multiply
    6,630.44x = 9,940.64 × 5,716.76
  4. Step 4: Simplify right side
    6,630.44x = 56,828,253.13
  5. Step 5: Solve for x
    x = 56,828,253.13/6,630.44
  6. Step 6: Final answer
    x = 8,570.81

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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.