Home / 2,280.16-3,145.19-1,394.43

Finding the Fourth Proportional to 2,280.16, 3,145.19 and 1,394.43

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Solution

The fourth proportional to 2,280.16, 3,145.19 and 1,394.43 is: 1,923.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.16 : 3,145.19 = 1,394.43 : x
  2. Step 2: Convert to fraction form
    2,280.16/3,145.19 = 1,394.43/x
  3. Step 3: Cross multiply
    2,280.16x = 3,145.19 × 1,394.43
  4. Step 4: Simplify right side
    2,280.16x = 4,385,747.29
  5. Step 5: Solve for x
    x = 4,385,747.29/2,280.16
  6. Step 6: Final answer
    x = 1,923.44

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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.