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Finding the Fourth Proportional to 7,202.90, 10,800.03 and 2,815.13

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Solution

The fourth proportional to 7,202.90, 10,800.03 and 2,815.13 is: 4,221.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,202.90 : 10,800.03 = 2,815.13 : x
  2. Step 2: Convert to fraction form
    7,202.90/10,800.03 = 2,815.13/x
  3. Step 3: Cross multiply
    7,202.90x = 10,800.03 × 2,815.13
  4. Step 4: Simplify right side
    7,202.90x = 30,403,488.45
  5. Step 5: Solve for x
    x = 30,403,488.45/7,202.90
  6. Step 6: Final answer
    x = 4,221.01

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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.