Home / 3,904.63-5,388.31-2,136.18

Finding the Fourth Proportional to 3,904.63, 5,388.31 and 2,136.18

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Solution

The fourth proportional to 3,904.63, 5,388.31 and 2,136.18 is: 2,947.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.63 : 5,388.31 = 2,136.18 : x
  2. Step 2: Convert to fraction form
    3,904.63/5,388.31 = 2,136.18/x
  3. Step 3: Cross multiply
    3,904.63x = 5,388.31 × 2,136.18
  4. Step 4: Simplify right side
    3,904.63x = 11,510,400.06
  5. Step 5: Solve for x
    x = 11,510,400.06/3,904.63
  6. Step 6: Final answer
    x = 2,947.88

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1.5x scale

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.