Home / 2,272.85-3,136.51-1,278.13

Finding the Fourth Proportional to 2,272.85, 3,136.51 and 1,278.13

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Solution

The fourth proportional to 2,272.85, 3,136.51 and 1,278.13 is: 1,763.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.85 : 3,136.51 = 1,278.13 : x
  2. Step 2: Convert to fraction form
    2,272.85/3,136.51 = 1,278.13/x
  3. Step 3: Cross multiply
    2,272.85x = 3,136.51 × 1,278.13
  4. Step 4: Simplify right side
    2,272.85x = 4,008,856.49
  5. Step 5: Solve for x
    x = 4,008,856.49/2,272.85
  6. Step 6: Final answer
    x = 1,763.81

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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.