Home / 5,291.57-7,936.80-2,171.91

Finding the Fourth Proportional to 5,291.57, 7,936.80 and 2,171.91

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Solution

The fourth proportional to 5,291.57, 7,936.80 and 2,171.91 is: 3,257.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.57 : 7,936.80 = 2,171.91 : x
  2. Step 2: Convert to fraction form
    5,291.57/7,936.80 = 2,171.91/x
  3. Step 3: Cross multiply
    5,291.57x = 7,936.80 × 2,171.91
  4. Step 4: Simplify right side
    5,291.57x = 17,237,964.74
  5. Step 5: Solve for x
    x = 17,237,964.74/5,291.57
  6. Step 6: Final answer
    x = 3,257.63

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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.