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Finding the Fourth Proportional to 5,579.57, 7,699.32 and 3,189.07

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Solution

The fourth proportional to 5,579.57, 7,699.32 and 3,189.07 is: 4,400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.57 : 7,699.32 = 3,189.07 : x
  2. Step 2: Convert to fraction form
    5,579.57/7,699.32 = 3,189.07/x
  3. Step 3: Cross multiply
    5,579.57x = 7,699.32 × 3,189.07
  4. Step 4: Simplify right side
    5,579.57x = 24,553,615.99
  5. Step 5: Solve for x
    x = 24,553,615.99/5,579.57
  6. Step 6: Final answer
    x = 4,400.63

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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.