Home / 7,122.20-10,662.48-4,151.57

Finding the Fourth Proportional to 7,122.20, 10,662.48 and 4,151.57

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Solution

The fourth proportional to 7,122.20, 10,662.48 and 4,151.57 is: 6,215.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.20 : 10,662.48 = 4,151.57 : x
  2. Step 2: Convert to fraction form
    7,122.20/10,662.48 = 4,151.57/x
  3. Step 3: Cross multiply
    7,122.20x = 10,662.48 × 4,151.57
  4. Step 4: Simplify right side
    7,122.20x = 44,265,978.78
  5. Step 5: Solve for x
    x = 44,265,978.78/7,122.20
  6. Step 6: Final answer
    x = 6,215.22

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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.