Home / 4,768.78-7,140.93-3,120.52

Finding the Fourth Proportional to 4,768.78, 7,140.93 and 3,120.52

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Solution

The fourth proportional to 4,768.78, 7,140.93 and 3,120.52 is: 4,672.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,768.78 : 7,140.93 = 3,120.52 : x
  2. Step 2: Convert to fraction form
    4,768.78/7,140.93 = 3,120.52/x
  3. Step 3: Cross multiply
    4,768.78x = 7,140.93 × 3,120.52
  4. Step 4: Simplify right side
    4,768.78x = 22,283,414.88
  5. Step 5: Solve for x
    x = 22,283,414.88/4,768.78
  6. Step 6: Final answer
    x = 4,672.77

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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.