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Finding the Fourth Proportional to 7,247.69, 10,871.81 and 2,568.20

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Solution

The fourth proportional to 7,247.69, 10,871.81 and 2,568.20 is: 3,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,247.69 : 10,871.81 = 2,568.20 : x
  2. Step 2: Convert to fraction form
    7,247.69/10,871.81 = 2,568.20/x
  3. Step 3: Cross multiply
    7,247.69x = 10,871.81 × 2,568.20
  4. Step 4: Simplify right side
    7,247.69x = 27,920,982.44
  5. Step 5: Solve for x
    x = 27,920,982.44/7,247.69
  6. Step 6: Final answer
    x = 3,852.40

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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.