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Finding the Fourth Proportional to 6,960.64, 9,601.60 and 3,975.88

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Solution

The fourth proportional to 6,960.64, 9,601.60 and 3,975.88 is: 5,484.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,960.64 : 9,601.60 = 3,975.88 : x
  2. Step 2: Convert to fraction form
    6,960.64/9,601.60 = 3,975.88/x
  3. Step 3: Cross multiply
    6,960.64x = 9,601.60 × 3,975.88
  4. Step 4: Simplify right side
    6,960.64x = 38,174,809.41
  5. Step 5: Solve for x
    x = 38,174,809.41/6,960.64
  6. Step 6: Final answer
    x = 5,484.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.