Home / 2,272.59-3,136.13-1,278.07

Finding the Fourth Proportional to 2,272.59, 3,136.13 and 1,278.07

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Solution

The fourth proportional to 2,272.59, 3,136.13 and 1,278.07 is: 1,763.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.59 : 3,136.13 = 1,278.07 : x
  2. Step 2: Convert to fraction form
    2,272.59/3,136.13 = 1,278.07/x
  3. Step 3: Cross multiply
    2,272.59x = 3,136.13 × 1,278.07
  4. Step 4: Simplify right side
    2,272.59x = 4,008,181.18
  5. Step 5: Solve for x
    x = 4,008,181.18/2,272.59
  6. Step 6: Final answer
    x = 1,763.71

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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.