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Finding the Fourth Proportional to 5,676.71, 7,828.87 and 3,974.34

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Solution

The fourth proportional to 5,676.71, 7,828.87 and 3,974.34 is: 5,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,676.71 : 7,828.87 = 3,974.34 : x
  2. Step 2: Convert to fraction form
    5,676.71/7,828.87 = 3,974.34/x
  3. Step 3: Cross multiply
    5,676.71x = 7,828.87 × 3,974.34
  4. Step 4: Simplify right side
    5,676.71x = 31,114,591.20
  5. Step 5: Solve for x
    x = 31,114,591.20/5,676.71
  6. Step 6: Final answer
    x = 5,481.10

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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.