Home / 2,272.78-3,136.53-1,278.08

Finding the Fourth Proportional to 2,272.78, 3,136.53 and 1,278.08

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Solution

The fourth proportional to 2,272.78, 3,136.53 and 1,278.08 is: 1,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.78 : 3,136.53 = 1,278.08 : x
  2. Step 2: Convert to fraction form
    2,272.78/3,136.53 = 1,278.08/x
  3. Step 3: Cross multiply
    2,272.78x = 3,136.53 × 1,278.08
  4. Step 4: Simplify right side
    2,272.78x = 4,008,736.26
  5. Step 5: Solve for x
    x = 4,008,736.26/2,272.78
  6. Step 6: Final answer
    x = 1,763.80

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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.