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Finding the Fourth Proportional to 7,273.92, 10,911.40 and 2,080.20

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Solution

The fourth proportional to 7,273.92, 10,911.40 and 2,080.20 is: 3,120.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,273.92 : 10,911.40 = 2,080.20 : x
  2. Step 2: Convert to fraction form
    7,273.92/10,911.40 = 2,080.20/x
  3. Step 3: Cross multiply
    7,273.92x = 10,911.40 × 2,080.20
  4. Step 4: Simplify right side
    7,273.92x = 22,697,894.28
  5. Step 5: Solve for x
    x = 22,697,894.28/7,273.92
  6. Step 6: Final answer
    x = 3,120.45

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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.