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Finding the Fourth Proportional to 2,173.21, 3,260.00 and 613.22

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Solution

The fourth proportional to 2,173.21, 3,260.00 and 613.22 is: 919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.21 : 3,260.00 = 613.22 : x
  2. Step 2: Convert to fraction form
    2,173.21/3,260.00 = 613.22/x
  3. Step 3: Cross multiply
    2,173.21x = 3,260.00 × 613.22
  4. Step 4: Simplify right side
    2,173.21x = 1,999,106.88
  5. Step 5: Solve for x
    x = 1,999,106.88/2,173.21
  6. Step 6: Final answer
    x = 919.89

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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.