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Finding the Fourth Proportional to 5,809.70, 8,709.64 and 2,520.31

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Solution

The fourth proportional to 5,809.70, 8,709.64 and 2,520.31 is: 3,778.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,809.70 : 8,709.64 = 2,520.31 : x
  2. Step 2: Convert to fraction form
    5,809.70/8,709.64 = 2,520.31/x
  3. Step 3: Cross multiply
    5,809.70x = 8,709.64 × 2,520.31
  4. Step 4: Simplify right side
    5,809.70x = 21,950,992.79
  5. Step 5: Solve for x
    x = 21,950,992.79/5,809.70
  6. Step 6: Final answer
    x = 3,778.34

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1.5x scale

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.