Home / 7,171.31-10,756.55-3,221.55

Finding the Fourth Proportional to 7,171.31, 10,756.55 and 3,221.55

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Solution

The fourth proportional to 7,171.31, 10,756.55 and 3,221.55 is: 4,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.31 : 10,756.55 = 3,221.55 : x
  2. Step 2: Convert to fraction form
    7,171.31/10,756.55 = 3,221.55/x
  3. Step 3: Cross multiply
    7,171.31x = 10,756.55 × 3,221.55
  4. Step 4: Simplify right side
    7,171.31x = 34,652,723.33
  5. Step 5: Solve for x
    x = 34,652,723.33/7,171.31
  6. Step 6: Final answer
    x = 4,832.13

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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.