Home / 3,724.92-5,140-2,153.52

Finding the Fourth Proportional to 3,724.92, 5,140 and 2,153.52

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Solution

The fourth proportional to 3,724.92, 5,140 and 2,153.52 is: 2,971.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.92 : 5,140 = 2,153.52 : x
  2. Step 2: Convert to fraction form
    3,724.92/5,140 = 2,153.52/x
  3. Step 3: Cross multiply
    3,724.92x = 5,140 × 2,153.52
  4. Step 4: Simplify right side
    3,724.92x = 11,069,092.80
  5. Step 5: Solve for x
    x = 11,069,092.80/3,724.92
  6. Step 6: Final answer
    x = 2,971.63

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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.