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Finding the Fourth Proportional to 3,620.99, 5,431.49 and 2,330.66

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Solution

The fourth proportional to 3,620.99, 5,431.49 and 2,330.66 is: 3,495.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.99 : 5,431.49 = 2,330.66 : x
  2. Step 2: Convert to fraction form
    3,620.99/5,431.49 = 2,330.66/x
  3. Step 3: Cross multiply
    3,620.99x = 5,431.49 × 2,330.66
  4. Step 4: Simplify right side
    3,620.99x = 12,658,917.67
  5. Step 5: Solve for x
    x = 12,658,917.67/3,620.99
  6. Step 6: Final answer
    x = 3,495.99

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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.