Home / 3,479.28-5,218.92-1,427.28

Finding the Fourth Proportional to 3,479.28, 5,218.92 and 1,427.28

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Solution

The fourth proportional to 3,479.28, 5,218.92 and 1,427.28 is: 2,140.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.28 : 5,218.92 = 1,427.28 : x
  2. Step 2: Convert to fraction form
    3,479.28/5,218.92 = 1,427.28/x
  3. Step 3: Cross multiply
    3,479.28x = 5,218.92 × 1,427.28
  4. Step 4: Simplify right side
    3,479.28x = 7,448,860.14
  5. Step 5: Solve for x
    x = 7,448,860.14/3,479.28
  6. Step 6: Final answer
    x = 2,140.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.