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Finding the Fourth Proportional to 7,160.76, 10,740.76 and 1,966.60

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Solution

The fourth proportional to 7,160.76, 10,740.76 and 1,966.60 is: 2,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,160.76 : 10,740.76 = 1,966.60 : x
  2. Step 2: Convert to fraction form
    7,160.76/10,740.76 = 1,966.60/x
  3. Step 3: Cross multiply
    7,160.76x = 10,740.76 × 1,966.60
  4. Step 4: Simplify right side
    7,160.76x = 21,122,778.62
  5. Step 5: Solve for x
    x = 21,122,778.62/7,160.76
  6. Step 6: Final answer
    x = 2,949.80

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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.