Home / 3,904.70-5,388.63-2,136.31

Finding the Fourth Proportional to 3,904.70, 5,388.63 and 2,136.31

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Solution

The fourth proportional to 3,904.70, 5,388.63 and 2,136.31 is: 2,948.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.70 : 5,388.63 = 2,136.31 : x
  2. Step 2: Convert to fraction form
    3,904.70/5,388.63 = 2,136.31/x
  3. Step 3: Cross multiply
    3,904.70x = 5,388.63 × 2,136.31
  4. Step 4: Simplify right side
    3,904.70x = 11,511,774.04
  5. Step 5: Solve for x
    x = 11,511,774.04/3,904.70
  6. Step 6: Final answer
    x = 2,948.18

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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.