Home / 5,230.90-7,216.85-2,991.95

Finding the Fourth Proportional to 5,230.90, 7,216.85 and 2,991.95

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Solution

The fourth proportional to 5,230.90, 7,216.85 and 2,991.95 is: 4,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.90 : 7,216.85 = 2,991.95 : x
  2. Step 2: Convert to fraction form
    5,230.90/7,216.85 = 2,991.95/x
  3. Step 3: Cross multiply
    5,230.90x = 7,216.85 × 2,991.95
  4. Step 4: Simplify right side
    5,230.90x = 21,592,476.58
  5. Step 5: Solve for x
    x = 21,592,476.58/5,230.90
  6. Step 6: Final answer
    x = 4,127.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.