Home / 7,817.81-11,726.64-1,974.38

Finding the Fourth Proportional to 7,817.81, 11,726.64 and 1,974.38

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Solution

The fourth proportional to 7,817.81, 11,726.64 and 1,974.38 is: 2,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.81 : 11,726.64 = 1,974.38 : x
  2. Step 2: Convert to fraction form
    7,817.81/11,726.64 = 1,974.38/x
  3. Step 3: Cross multiply
    7,817.81x = 11,726.64 × 1,974.38
  4. Step 4: Simplify right side
    7,817.81x = 23,152,784.85
  5. Step 5: Solve for x
    x = 23,152,784.85/7,817.81
  6. Step 6: Final answer
    x = 2,961.55

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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.