Home / 2,340.71-3,229.90-1,396.55

Finding the Fourth Proportional to 2,340.71, 3,229.90 and 1,396.55

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Solution

The fourth proportional to 2,340.71, 3,229.90 and 1,396.55 is: 1,927.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.71 : 3,229.90 = 1,396.55 : x
  2. Step 2: Convert to fraction form
    2,340.71/3,229.90 = 1,396.55/x
  3. Step 3: Cross multiply
    2,340.71x = 3,229.90 × 1,396.55
  4. Step 4: Simplify right side
    2,340.71x = 4,510,716.85
  5. Step 5: Solve for x
    x = 4,510,716.85/2,340.71
  6. Step 6: Final answer
    x = 1,927.07

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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.