Home / 3,855.40-5,319.02-2,529.86

Finding the Fourth Proportional to 3,855.40, 5,319.02 and 2,529.86

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Solution

The fourth proportional to 3,855.40, 5,319.02 and 2,529.86 is: 3,490.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.40 : 5,319.02 = 2,529.86 : x
  2. Step 2: Convert to fraction form
    3,855.40/5,319.02 = 2,529.86/x
  3. Step 3: Cross multiply
    3,855.40x = 5,319.02 × 2,529.86
  4. Step 4: Simplify right side
    3,855.40x = 13,456,375.94
  5. Step 5: Solve for x
    x = 13,456,375.94/3,855.40
  6. Step 6: Final answer
    x = 3,490.27

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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.