Home / 3,953.68-5,455.95-2,185.28

Finding the Fourth Proportional to 3,953.68, 5,455.95 and 2,185.28

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Solution

The fourth proportional to 3,953.68, 5,455.95 and 2,185.28 is: 3,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.68 : 5,455.95 = 2,185.28 : x
  2. Step 2: Convert to fraction form
    3,953.68/5,455.95 = 2,185.28/x
  3. Step 3: Cross multiply
    3,953.68x = 5,455.95 × 2,185.28
  4. Step 4: Simplify right side
    3,953.68x = 11,922,778.42
  5. Step 5: Solve for x
    x = 11,922,778.42/3,953.68
  6. Step 6: Final answer
    x = 3,015.62

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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.