Home / 3,179.86-4,388.18-1,782.61

Finding the Fourth Proportional to 3,179.86, 4,388.18 and 1,782.61

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Solution

The fourth proportional to 3,179.86, 4,388.18 and 1,782.61 is: 2,459.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.86 : 4,388.18 = 1,782.61 : x
  2. Step 2: Convert to fraction form
    3,179.86/4,388.18 = 1,782.61/x
  3. Step 3: Cross multiply
    3,179.86x = 4,388.18 × 1,782.61
  4. Step 4: Simplify right side
    3,179.86x = 7,822,393.67
  5. Step 5: Solve for x
    x = 7,822,393.67/3,179.86
  6. Step 6: Final answer
    x = 2,459.98

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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.