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Finding the Fourth Proportional to 3,590.92, 5,385.77 and 993.25

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Solution

The fourth proportional to 3,590.92, 5,385.77 and 993.25 is: 1,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590.92 : 5,385.77 = 993.25 : x
  2. Step 2: Convert to fraction form
    3,590.92/5,385.77 = 993.25/x
  3. Step 3: Cross multiply
    3,590.92x = 5,385.77 × 993.25
  4. Step 4: Simplify right side
    3,590.92x = 5,349,416.05
  5. Step 5: Solve for x
    x = 5,349,416.05/3,590.92
  6. Step 6: Final answer
    x = 1,489.71

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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.