Home / 3,948.39-5,453.37-2,619.81

Finding the Fourth Proportional to 3,948.39, 5,453.37 and 2,619.81

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Solution

The fourth proportional to 3,948.39, 5,453.37 and 2,619.81 is: 3,618.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.39 : 5,453.37 = 2,619.81 : x
  2. Step 2: Convert to fraction form
    3,948.39/5,453.37 = 2,619.81/x
  3. Step 3: Cross multiply
    3,948.39x = 5,453.37 × 2,619.81
  4. Step 4: Simplify right side
    3,948.39x = 14,286,793.26
  5. Step 5: Solve for x
    x = 14,286,793.26/3,948.39
  6. Step 6: Final answer
    x = 3,618.38

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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.