Home / 3,904.40-5,388.09-2,136.00

Finding the Fourth Proportional to 3,904.40, 5,388.09 and 2,136.00

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Solution

The fourth proportional to 3,904.40, 5,388.09 and 2,136.00 is: 2,947.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.40 : 5,388.09 = 2,136.00 : x
  2. Step 2: Convert to fraction form
    3,904.40/5,388.09 = 2,136.00/x
  3. Step 3: Cross multiply
    3,904.40x = 5,388.09 × 2,136.00
  4. Step 4: Simplify right side
    3,904.40x = 11,508,936.09
  5. Step 5: Solve for x
    x = 11,508,936.09/3,904.40
  6. Step 6: Final answer
    x = 2,947.69

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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.