Home / 3,904.85-5,388.70-2,136.46

Finding the Fourth Proportional to 3,904.85, 5,388.70 and 2,136.46

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Solution

The fourth proportional to 3,904.85, 5,388.70 and 2,136.46 is: 2,948.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.85 : 5,388.70 = 2,136.46 : x
  2. Step 2: Convert to fraction form
    3,904.85/5,388.70 = 2,136.46/x
  3. Step 3: Cross multiply
    3,904.85x = 5,388.70 × 2,136.46
  4. Step 4: Simplify right side
    3,904.85x = 11,512,742.00
  5. Step 5: Solve for x
    x = 11,512,742.00/3,904.85
  6. Step 6: Final answer
    x = 2,948.32

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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.