Home / 2,280.63-3,145.62-1,396.92

Finding the Fourth Proportional to 2,280.63, 3,145.62 and 1,396.92

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Solution

The fourth proportional to 2,280.63, 3,145.62 and 1,396.92 is: 1,926.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.63 : 3,145.62 = 1,396.92 : x
  2. Step 2: Convert to fraction form
    2,280.63/3,145.62 = 1,396.92/x
  3. Step 3: Cross multiply
    2,280.63x = 3,145.62 × 1,396.92
  4. Step 4: Simplify right side
    2,280.63x = 4,394,179.49
  5. Step 5: Solve for x
    x = 4,394,179.49/2,280.63
  6. Step 6: Final answer
    x = 1,926.74

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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.