Home / 7,813.59-11,721.60-2,618.25

Finding the Fourth Proportional to 7,813.59, 11,721.60 and 2,618.25

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Solution

The fourth proportional to 7,813.59, 11,721.60 and 2,618.25 is: 3,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.59 : 11,721.60 = 2,618.25 : x
  2. Step 2: Convert to fraction form
    7,813.59/11,721.60 = 2,618.25/x
  3. Step 3: Cross multiply
    7,813.59x = 11,721.60 × 2,618.25
  4. Step 4: Simplify right side
    7,813.59x = 30,690,079.20
  5. Step 5: Solve for x
    x = 30,690,079.20/7,813.59
  6. Step 6: Final answer
    x = 3,927.78

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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.