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Finding the Fourth Proportional to 3,393.63, 5,090.40 and 1,749.30

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Solution

The fourth proportional to 3,393.63, 5,090.40 and 1,749.30 is: 2,623.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.63 : 5,090.40 = 1,749.30 : x
  2. Step 2: Convert to fraction form
    3,393.63/5,090.40 = 1,749.30/x
  3. Step 3: Cross multiply
    3,393.63x = 5,090.40 × 1,749.30
  4. Step 4: Simplify right side
    3,393.63x = 8,904,636.72
  5. Step 5: Solve for x
    x = 8,904,636.72/3,393.63
  6. Step 6: Final answer
    x = 2,623.93

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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.