Home / 7,845.78-11,768.52-3,165.69

Finding the Fourth Proportional to 7,845.78, 11,768.52 and 3,165.69

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Solution

The fourth proportional to 7,845.78, 11,768.52 and 3,165.69 is: 4,748.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,845.78 : 11,768.52 = 3,165.69 : x
  2. Step 2: Convert to fraction form
    7,845.78/11,768.52 = 3,165.69/x
  3. Step 3: Cross multiply
    7,845.78x = 11,768.52 × 3,165.69
  4. Step 4: Simplify right side
    7,845.78x = 37,255,486.08
  5. Step 5: Solve for x
    x = 37,255,486.08/7,845.78
  6. Step 6: Final answer
    x = 4,748.47

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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.