Home / 2,571.20-3,858.17-1,090.65

Finding the Fourth Proportional to 2,571.20, 3,858.17 and 1,090.65

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Solution

The fourth proportional to 2,571.20, 3,858.17 and 1,090.65 is: 1,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.20 : 3,858.17 = 1,090.65 : x
  2. Step 2: Convert to fraction form
    2,571.20/3,858.17 = 1,090.65/x
  3. Step 3: Cross multiply
    2,571.20x = 3,858.17 × 1,090.65
  4. Step 4: Simplify right side
    2,571.20x = 4,207,909.63
  5. Step 5: Solve for x
    x = 4,207,909.63/2,571.20
  6. Step 6: Final answer
    x = 1,636.55

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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.