Home / 3,179.85-4,388.19-1,782.60

Finding the Fourth Proportional to 3,179.85, 4,388.19 and 1,782.60

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Solution

The fourth proportional to 3,179.85, 4,388.19 and 1,782.60 is: 2,459.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.85 : 4,388.19 = 1,782.60 : x
  2. Step 2: Convert to fraction form
    3,179.85/4,388.19 = 1,782.60/x
  3. Step 3: Cross multiply
    3,179.85x = 4,388.19 × 1,782.60
  4. Step 4: Simplify right side
    3,179.85x = 7,822,381.71
  5. Step 5: Solve for x
    x = 7,822,381.71/3,179.85
  6. Step 6: Final answer
    x = 2,459.99

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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.