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Finding the Fourth Proportional to 2,135.76, 3,203.67 and 655.02

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Solution

The fourth proportional to 2,135.76, 3,203.67 and 655.02 is: 982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.76 : 3,203.67 = 655.02 : x
  2. Step 2: Convert to fraction form
    2,135.76/3,203.67 = 655.02/x
  3. Step 3: Cross multiply
    2,135.76x = 3,203.67 × 655.02
  4. Step 4: Simplify right side
    2,135.76x = 2,098,467.92
  5. Step 5: Solve for x
    x = 2,098,467.92/2,135.76
  6. Step 6: Final answer
    x = 982.54

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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.