Home / 7,147.50-10,720.89-2,216.76

Finding the Fourth Proportional to 7,147.50, 10,720.89 and 2,216.76

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Solution

The fourth proportional to 7,147.50, 10,720.89 and 2,216.76 is: 3,325.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.50 : 10,720.89 = 2,216.76 : x
  2. Step 2: Convert to fraction form
    7,147.50/10,720.89 = 2,216.76/x
  3. Step 3: Cross multiply
    7,147.50x = 10,720.89 × 2,216.76
  4. Step 4: Simplify right side
    7,147.50x = 23,765,640.12
  5. Step 5: Solve for x
    x = 23,765,640.12/7,147.50
  6. Step 6: Final answer
    x = 3,325.03

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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.