Home / 3,905.33-5,389.36-2,136.92

Finding the Fourth Proportional to 3,905.33, 5,389.36 and 2,136.92

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Solution

The fourth proportional to 3,905.33, 5,389.36 and 2,136.92 is: 2,948.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.33 : 5,389.36 = 2,136.92 : x
  2. Step 2: Convert to fraction form
    3,905.33/5,389.36 = 2,136.92/x
  3. Step 3: Cross multiply
    3,905.33x = 5,389.36 × 2,136.92
  4. Step 4: Simplify right side
    3,905.33x = 11,516,639.30
  5. Step 5: Solve for x
    x = 11,516,639.30/3,905.33
  6. Step 6: Final answer
    x = 2,948.96

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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.