Home / 7,930.18-11,895.41-2,086.57

Finding the Fourth Proportional to 7,930.18, 11,895.41 and 2,086.57

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Solution

The fourth proportional to 7,930.18, 11,895.41 and 2,086.57 is: 3,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,930.18 : 11,895.41 = 2,086.57 : x
  2. Step 2: Convert to fraction form
    7,930.18/11,895.41 = 2,086.57/x
  3. Step 3: Cross multiply
    7,930.18x = 11,895.41 × 2,086.57
  4. Step 4: Simplify right side
    7,930.18x = 24,820,605.64
  5. Step 5: Solve for x
    x = 24,820,605.64/7,930.18
  6. Step 6: Final answer
    x = 3,129.89

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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.