Home / 7,221.20-10,806.60-4,301.60

Finding the Fourth Proportional to 7,221.20, 10,806.60 and 4,301.60

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Solution

The fourth proportional to 7,221.20, 10,806.60 and 4,301.60 is: 6,437.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.20 : 10,806.60 = 4,301.60 : x
  2. Step 2: Convert to fraction form
    7,221.20/10,806.60 = 4,301.60/x
  3. Step 3: Cross multiply
    7,221.20x = 10,806.60 × 4,301.60
  4. Step 4: Simplify right side
    7,221.20x = 46,485,670.56
  5. Step 5: Solve for x
    x = 46,485,670.56/7,221.20
  6. Step 6: Final answer
    x = 6,437.39

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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.