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Finding the Fourth Proportional to 8,519.10, 11,757.09 and 4,742.20

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Solution

The fourth proportional to 8,519.10, 11,757.09 and 4,742.20 is: 6,544.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.10 : 11,757.09 = 4,742.20 : x
  2. Step 2: Convert to fraction form
    8,519.10/11,757.09 = 4,742.20/x
  3. Step 3: Cross multiply
    8,519.10x = 11,757.09 × 4,742.20
  4. Step 4: Simplify right side
    8,519.10x = 55,754,472.20
  5. Step 5: Solve for x
    x = 55,754,472.20/8,519.10
  6. Step 6: Final answer
    x = 6,544.64

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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.