Home / 2,447.13-3,377.04-1,399.21

Finding the Fourth Proportional to 2,447.13, 3,377.04 and 1,399.21

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Solution

The fourth proportional to 2,447.13, 3,377.04 and 1,399.21 is: 1,930.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.13 : 3,377.04 = 1,399.21 : x
  2. Step 2: Convert to fraction form
    2,447.13/3,377.04 = 1,399.21/x
  3. Step 3: Cross multiply
    2,447.13x = 3,377.04 × 1,399.21
  4. Step 4: Simplify right side
    2,447.13x = 4,725,188.14
  5. Step 5: Solve for x
    x = 4,725,188.14/2,447.13
  6. Step 6: Final answer
    x = 1,930.91

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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.