Home / 9,012.20-13,515.90-2,772.20

Finding the Fourth Proportional to 9,012.20, 13,515.90 and 2,772.20

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Solution

The fourth proportional to 9,012.20, 13,515.90 and 2,772.20 is: 4,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.20 : 13,515.90 = 2,772.20 : x
  2. Step 2: Convert to fraction form
    9,012.20/13,515.90 = 2,772.20/x
  3. Step 3: Cross multiply
    9,012.20x = 13,515.90 × 2,772.20
  4. Step 4: Simplify right side
    9,012.20x = 37,468,777.98
  5. Step 5: Solve for x
    x = 37,468,777.98/9,012.20
  6. Step 6: Final answer
    x = 4,157.56

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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.