Home / 4,749.52-7,120.44-1,978.29

Finding the Fourth Proportional to 4,749.52, 7,120.44 and 1,978.29

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Solution

The fourth proportional to 4,749.52, 7,120.44 and 1,978.29 is: 2,965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.52 : 7,120.44 = 1,978.29 : x
  2. Step 2: Convert to fraction form
    4,749.52/7,120.44 = 1,978.29/x
  3. Step 3: Cross multiply
    4,749.52x = 7,120.44 × 1,978.29
  4. Step 4: Simplify right side
    4,749.52x = 14,086,273.55
  5. Step 5: Solve for x
    x = 14,086,273.55/4,749.52
  6. Step 6: Final answer
    x = 2,965.83

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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.