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Finding the Fourth Proportional to 4,974.78, 6,866.17 and 2,851.73

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Solution

The fourth proportional to 4,974.78, 6,866.17 and 2,851.73 is: 3,935.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974.78 : 6,866.17 = 2,851.73 : x
  2. Step 2: Convert to fraction form
    4,974.78/6,866.17 = 2,851.73/x
  3. Step 3: Cross multiply
    4,974.78x = 6,866.17 × 2,851.73
  4. Step 4: Simplify right side
    4,974.78x = 19,580,483.95
  5. Step 5: Solve for x
    x = 19,580,483.95/4,974.78
  6. Step 6: Final answer
    x = 3,935.95

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1.5x scale

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.