Home / 3,571.40-5,353.44-1,261.28

Finding the Fourth Proportional to 3,571.40, 5,353.44 and 1,261.28

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Solution

The fourth proportional to 3,571.40, 5,353.44 and 1,261.28 is: 1,890.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.40 : 5,353.44 = 1,261.28 : x
  2. Step 2: Convert to fraction form
    3,571.40/5,353.44 = 1,261.28/x
  3. Step 3: Cross multiply
    3,571.40x = 5,353.44 × 1,261.28
  4. Step 4: Simplify right side
    3,571.40x = 6,752,186.80
  5. Step 5: Solve for x
    x = 6,752,186.80/3,571.40
  6. Step 6: Final answer
    x = 1,890.63

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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.