Home / 8,127.20-11,215.40-4,542.20

Finding the Fourth Proportional to 8,127.20, 11,215.40 and 4,542.20

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Solution

The fourth proportional to 8,127.20, 11,215.40 and 4,542.20 is: 6,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.20 : 11,215.40 = 4,542.20 : x
  2. Step 2: Convert to fraction form
    8,127.20/11,215.40 = 4,542.20/x
  3. Step 3: Cross multiply
    8,127.20x = 11,215.40 × 4,542.20
  4. Step 4: Simplify right side
    8,127.20x = 50,942,589.88
  5. Step 5: Solve for x
    x = 50,942,589.88/8,127.20
  6. Step 6: Final answer
    x = 6,268.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.