Home / 8,687.57-13,031.22-2,764.81

Finding the Fourth Proportional to 8,687.57, 13,031.22 and 2,764.81

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Solution

The fourth proportional to 8,687.57, 13,031.22 and 2,764.81 is: 4,147.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.57 : 13,031.22 = 2,764.81 : x
  2. Step 2: Convert to fraction form
    8,687.57/13,031.22 = 2,764.81/x
  3. Step 3: Cross multiply
    8,687.57x = 13,031.22 × 2,764.81
  4. Step 4: Simplify right side
    8,687.57x = 36,028,847.37
  5. Step 5: Solve for x
    x = 36,028,847.37/8,687.57
  6. Step 6: Final answer
    x = 4,147.17

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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.