Home / 8,770.10-13,151.31-3,221.66

Finding the Fourth Proportional to 8,770.10, 13,151.31 and 3,221.66

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Solution

The fourth proportional to 8,770.10, 13,151.31 and 3,221.66 is: 4,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.10 : 13,151.31 = 3,221.66 : x
  2. Step 2: Convert to fraction form
    8,770.10/13,151.31 = 3,221.66/x
  3. Step 3: Cross multiply
    8,770.10x = 13,151.31 × 3,221.66
  4. Step 4: Simplify right side
    8,770.10x = 42,369,049.37
  5. Step 5: Solve for x
    x = 42,369,049.37/8,770.10
  6. Step 6: Final answer
    x = 4,831.08

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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.