Home / 4,978.20-6,865.36-3,983.52

Finding the Fourth Proportional to 4,978.20, 6,865.36 and 3,983.52

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Solution

The fourth proportional to 4,978.20, 6,865.36 and 3,983.52 is: 5,493.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.20 : 6,865.36 = 3,983.52 : x
  2. Step 2: Convert to fraction form
    4,978.20/6,865.36 = 3,983.52/x
  3. Step 3: Cross multiply
    4,978.20x = 6,865.36 × 3,983.52
  4. Step 4: Simplify right side
    4,978.20x = 27,348,298.87
  5. Step 5: Solve for x
    x = 27,348,298.87/4,978.20
  6. Step 6: Final answer
    x = 5,493.61

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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.