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Finding the Fourth Proportional to 7,205.80, 10,808.70 and 7,043.80

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Solution

The fourth proportional to 7,205.80, 10,808.70 and 7,043.80 is: 10,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,205.80 : 10,808.70 = 7,043.80 : x
  2. Step 2: Convert to fraction form
    7,205.80/10,808.70 = 7,043.80/x
  3. Step 3: Cross multiply
    7,205.80x = 10,808.70 × 7,043.80
  4. Step 4: Simplify right side
    7,205.80x = 76,134,321.06
  5. Step 5: Solve for x
    x = 76,134,321.06/7,205.80
  6. Step 6: Final answer
    x = 10,565.70

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Half scale
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Similar ratio
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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.