Home / 3,897.26-5,379.12-2,571.20

Finding the Fourth Proportional to 3,897.26, 5,379.12 and 2,571.20

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Solution

The fourth proportional to 3,897.26, 5,379.12 and 2,571.20 is: 3,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.26 : 5,379.12 = 2,571.20 : x
  2. Step 2: Convert to fraction form
    3,897.26/5,379.12 = 2,571.20/x
  3. Step 3: Cross multiply
    3,897.26x = 5,379.12 × 2,571.20
  4. Step 4: Simplify right side
    3,897.26x = 13,830,793.34
  5. Step 5: Solve for x
    x = 13,830,793.34/3,897.26
  6. Step 6: Final answer
    x = 3,548.85

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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.