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Finding the Fourth Proportional to 7,273.10, 10,909.65 and 7,200.20

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Solution

The fourth proportional to 7,273.10, 10,909.65 and 7,200.20 is: 10,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,273.10 : 10,909.65 = 7,200.20 : x
  2. Step 2: Convert to fraction form
    7,273.10/10,909.65 = 7,200.20/x
  3. Step 3: Cross multiply
    7,273.10x = 10,909.65 × 7,200.20
  4. Step 4: Simplify right side
    7,273.10x = 78,551,661.93
  5. Step 5: Solve for x
    x = 78,551,661.93/7,273.10
  6. Step 6: Final answer
    x = 10,800.30

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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.