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Finding the Fourth Proportional to 7,140.73, 10,711.08 and 1,946.60

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Solution

The fourth proportional to 7,140.73, 10,711.08 and 1,946.60 is: 2,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.73 : 10,711.08 = 1,946.60 : x
  2. Step 2: Convert to fraction form
    7,140.73/10,711.08 = 1,946.60/x
  3. Step 3: Cross multiply
    7,140.73x = 10,711.08 × 1,946.60
  4. Step 4: Simplify right side
    7,140.73x = 20,850,188.33
  5. Step 5: Solve for x
    x = 20,850,188.33/7,140.73
  6. Step 6: Final answer
    x = 2,919.90

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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.