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Finding the Fourth Proportional to 3,593.99, 5,390.96 and 2,128.70

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Solution

The fourth proportional to 3,593.99, 5,390.96 and 2,128.70 is: 3,193.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,593.99 : 5,390.96 = 2,128.70 : x
  2. Step 2: Convert to fraction form
    3,593.99/5,390.96 = 2,128.70/x
  3. Step 3: Cross multiply
    3,593.99x = 5,390.96 × 2,128.70
  4. Step 4: Simplify right side
    3,593.99x = 11,475,698.95
  5. Step 5: Solve for x
    x = 11,475,698.95/3,593.99
  6. Step 6: Final answer
    x = 3,193.03

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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.