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Finding the Fourth Proportional to 7,249.40, 10,874.90 and 2,318.20

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Solution

The fourth proportional to 7,249.40, 10,874.90 and 2,318.20 is: 3,477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,249.40 : 10,874.90 = 2,318.20 : x
  2. Step 2: Convert to fraction form
    7,249.40/10,874.90 = 2,318.20/x
  3. Step 3: Cross multiply
    7,249.40x = 10,874.90 × 2,318.20
  4. Step 4: Simplify right side
    7,249.40x = 25,210,193.18
  5. Step 5: Solve for x
    x = 25,210,193.18/7,249.40
  6. Step 6: Final answer
    x = 3,477.56

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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.