Home / 7,936.79-11,905.49-2,390.91

Finding the Fourth Proportional to 7,936.79, 11,905.49 and 2,390.91

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Solution

The fourth proportional to 7,936.79, 11,905.49 and 2,390.91 is: 3,586.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,936.79 : 11,905.49 = 2,390.91 : x
  2. Step 2: Convert to fraction form
    7,936.79/11,905.49 = 2,390.91/x
  3. Step 3: Cross multiply
    7,936.79x = 11,905.49 × 2,390.91
  4. Step 4: Simplify right side
    7,936.79x = 28,464,943.14
  5. Step 5: Solve for x
    x = 28,464,943.14/7,936.79
  6. Step 6: Final answer
    x = 3,586.46

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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.