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Finding the Fourth Proportional to 5,720.96, 7,890.85 and 5,250.37

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Solution

The fourth proportional to 5,720.96, 7,890.85 and 5,250.37 is: 7,241.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.96 : 7,890.85 = 5,250.37 : x
  2. Step 2: Convert to fraction form
    5,720.96/7,890.85 = 5,250.37/x
  3. Step 3: Cross multiply
    5,720.96x = 7,890.85 × 5,250.37
  4. Step 4: Simplify right side
    5,720.96x = 41,429,898.56
  5. Step 5: Solve for x
    x = 41,429,898.56/5,720.96
  6. Step 6: Final answer
    x = 7,241.78

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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.