Home / 2,272.43-3,136.07-1,388.09

Finding the Fourth Proportional to 2,272.43, 3,136.07 and 1,388.09

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Solution

The fourth proportional to 2,272.43, 3,136.07 and 1,388.09 is: 1,915.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.43 : 3,136.07 = 1,388.09 : x
  2. Step 2: Convert to fraction form
    2,272.43/3,136.07 = 1,388.09/x
  3. Step 3: Cross multiply
    2,272.43x = 3,136.07 × 1,388.09
  4. Step 4: Simplify right side
    2,272.43x = 4,353,140.47
  5. Step 5: Solve for x
    x = 4,353,140.47/2,272.43
  6. Step 6: Final answer
    x = 1,915.63

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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.