Home / 2,278.81-3,144.38-1,270.30

Finding the Fourth Proportional to 2,278.81, 3,144.38 and 1,270.30

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Solution

The fourth proportional to 2,278.81, 3,144.38 and 1,270.30 is: 1,752.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.81 : 3,144.38 = 1,270.30 : x
  2. Step 2: Convert to fraction form
    2,278.81/3,144.38 = 1,270.30/x
  3. Step 3: Cross multiply
    2,278.81x = 3,144.38 × 1,270.30
  4. Step 4: Simplify right side
    2,278.81x = 3,994,283.84
  5. Step 5: Solve for x
    x = 3,994,283.84/2,278.81
  6. Step 6: Final answer
    x = 1,752.79

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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.