Home / 4,749.60-7,124.40-3,939.60

Finding the Fourth Proportional to 4,749.60, 7,124.40 and 3,939.60

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Solution

The fourth proportional to 4,749.60, 7,124.40 and 3,939.60 is: 5,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.60 : 7,124.40 = 3,939.60 : x
  2. Step 2: Convert to fraction form
    4,749.60/7,124.40 = 3,939.60/x
  3. Step 3: Cross multiply
    4,749.60x = 7,124.40 × 3,939.60
  4. Step 4: Simplify right side
    4,749.60x = 28,067,286.24
  5. Step 5: Solve for x
    x = 28,067,286.24/4,749.60
  6. Step 6: Final answer
    x = 5,909.40

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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.