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Finding the Fourth Proportional to 5,815.70, 8,709.78 and 4,427.36

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Solution

The fourth proportional to 5,815.70, 8,709.78 and 4,427.36 is: 6,630.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.70 : 8,709.78 = 4,427.36 : x
  2. Step 2: Convert to fraction form
    5,815.70/8,709.78 = 4,427.36/x
  3. Step 3: Cross multiply
    5,815.70x = 8,709.78 × 4,427.36
  4. Step 4: Simplify right side
    5,815.70x = 38,561,331.58
  5. Step 5: Solve for x
    x = 38,561,331.58/5,815.70
  6. Step 6: Final answer
    x = 6,630.56

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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.