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Finding the Fourth Proportional to 3,045.78, 4,203.05 and 1,719.60

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Solution

The fourth proportional to 3,045.78, 4,203.05 and 1,719.60 is: 2,372.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.78 : 4,203.05 = 1,719.60 : x
  2. Step 2: Convert to fraction form
    3,045.78/4,203.05 = 1,719.60/x
  3. Step 3: Cross multiply
    3,045.78x = 4,203.05 × 1,719.60
  4. Step 4: Simplify right side
    3,045.78x = 7,227,556.18
  5. Step 5: Solve for x
    x = 7,227,556.18/3,045.78
  6. Step 6: Final answer
    x = 2,372.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.