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Finding the Fourth Proportional to 2,715.18, 3,745.98 and 1,719.48

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Solution

The fourth proportional to 2,715.18, 3,745.98 and 1,719.48 is: 2,372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.18 : 3,745.98 = 1,719.48 : x
  2. Step 2: Convert to fraction form
    2,715.18/3,745.98 = 1,719.48/x
  3. Step 3: Cross multiply
    2,715.18x = 3,745.98 × 1,719.48
  4. Step 4: Simplify right side
    2,715.18x = 6,441,137.69
  5. Step 5: Solve for x
    x = 6,441,137.69/2,715.18
  6. Step 6: Final answer
    x = 2,372.27

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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.