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Finding the Fourth Proportional to 6,641.76, 9,960.30 and 1,960.53

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Solution

The fourth proportional to 6,641.76, 9,960.30 and 1,960.53 is: 2,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.76 : 9,960.30 = 1,960.53 : x
  2. Step 2: Convert to fraction form
    6,641.76/9,960.30 = 1,960.53/x
  3. Step 3: Cross multiply
    6,641.76x = 9,960.30 × 1,960.53
  4. Step 4: Simplify right side
    6,641.76x = 19,527,466.96
  5. Step 5: Solve for x
    x = 19,527,466.96/6,641.76
  6. Step 6: Final answer
    x = 2,940.10

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Similar ratio
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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.