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Finding the Fourth Proportional to 7,200.95, 10,798.95 and 3,500.80

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Solution

The fourth proportional to 7,200.95, 10,798.95 and 3,500.80 is: 5,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.95 : 10,798.95 = 3,500.80 : x
  2. Step 2: Convert to fraction form
    7,200.95/10,798.95 = 3,500.80/x
  3. Step 3: Cross multiply
    7,200.95x = 10,798.95 × 3,500.80
  4. Step 4: Simplify right side
    7,200.95x = 37,804,910.17
  5. Step 5: Solve for x
    x = 37,804,910.17/7,200.95
  6. Step 6: Final answer
    x = 5,249.99

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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.