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Finding the Fourth Proportional to 7,202.40, 10,814.40 and 5,020.80

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Solution

The fourth proportional to 7,202.40, 10,814.40 and 5,020.80 is: 7,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,202.40 : 10,814.40 = 5,020.80 : x
  2. Step 2: Convert to fraction form
    7,202.40/10,814.40 = 5,020.80/x
  3. Step 3: Cross multiply
    7,202.40x = 10,814.40 × 5,020.80
  4. Step 4: Simplify right side
    7,202.40x = 54,296,939.52
  5. Step 5: Solve for x
    x = 54,296,939.52/7,202.40
  6. Step 6: Final answer
    x = 7,538.73

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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.