Home / 2,571.35-3,548.45-1,392.39

Finding the Fourth Proportional to 2,571.35, 3,548.45 and 1,392.39

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Solution

The fourth proportional to 2,571.35, 3,548.45 and 1,392.39 is: 1,921.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.35 : 3,548.45 = 1,392.39 : x
  2. Step 2: Convert to fraction form
    2,571.35/3,548.45 = 1,392.39/x
  3. Step 3: Cross multiply
    2,571.35x = 3,548.45 × 1,392.39
  4. Step 4: Simplify right side
    2,571.35x = 4,940,819.33
  5. Step 5: Solve for x
    x = 4,940,819.33/2,571.35
  6. Step 6: Final answer
    x = 1,921.49

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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.