Home / 7,147.20-10,721.25-2,220.06

Finding the Fourth Proportional to 7,147.20, 10,721.25 and 2,220.06

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Solution

The fourth proportional to 7,147.20, 10,721.25 and 2,220.06 is: 3,330.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.20 : 10,721.25 = 2,220.06 : x
  2. Step 2: Convert to fraction form
    7,147.20/10,721.25 = 2,220.06/x
  3. Step 3: Cross multiply
    7,147.20x = 10,721.25 × 2,220.06
  4. Step 4: Simplify right side
    7,147.20x = 23,801,818.28
  5. Step 5: Solve for x
    x = 23,801,818.28/7,147.20
  6. Step 6: Final answer
    x = 3,330.23

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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.