Home / 2,274.49-3,138.58-1,280.11

Finding the Fourth Proportional to 2,274.49, 3,138.58 and 1,280.11

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Solution

The fourth proportional to 2,274.49, 3,138.58 and 1,280.11 is: 1,766.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,274.49 : 3,138.58 = 1,280.11 : x
  2. Step 2: Convert to fraction form
    2,274.49/3,138.58 = 1,280.11/x
  3. Step 3: Cross multiply
    2,274.49x = 3,138.58 × 1,280.11
  4. Step 4: Simplify right side
    2,274.49x = 4,017,727.64
  5. Step 5: Solve for x
    x = 4,017,727.64/2,274.49
  6. Step 6: Final answer
    x = 1,766.43

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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.