Home / 3,179.80-4,387.26-1,782.52

Finding the Fourth Proportional to 3,179.80, 4,387.26 and 1,782.52

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Solution

The fourth proportional to 3,179.80, 4,387.26 and 1,782.52 is: 2,459.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.80 : 4,387.26 = 1,782.52 : x
  2. Step 2: Convert to fraction form
    3,179.80/4,387.26 = 1,782.52/x
  3. Step 3: Cross multiply
    3,179.80x = 4,387.26 × 1,782.52
  4. Step 4: Simplify right side
    3,179.80x = 7,820,378.70
  5. Step 5: Solve for x
    x = 7,820,378.70/3,179.80
  6. Step 6: Final answer
    x = 2,459.39

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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.