Home / 7,149.09-10,720.13-2,217.81

Finding the Fourth Proportional to 7,149.09, 10,720.13 and 2,217.81

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Solution

The fourth proportional to 7,149.09, 10,720.13 and 2,217.81 is: 3,325.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.09 : 10,720.13 = 2,217.81 : x
  2. Step 2: Convert to fraction form
    7,149.09/10,720.13 = 2,217.81/x
  3. Step 3: Cross multiply
    7,149.09x = 10,720.13 × 2,217.81
  4. Step 4: Simplify right side
    7,149.09x = 23,775,200.43
  5. Step 5: Solve for x
    x = 23,775,200.43/7,149.09
  6. Step 6: Final answer
    x = 3,325.63

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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.