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Finding the Fourth Proportional to 2,715.30, 3,745.08 and 1,719.54

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Solution

The fourth proportional to 2,715.30, 3,745.08 and 1,719.54 is: 2,371.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.30 : 3,745.08 = 1,719.54 : x
  2. Step 2: Convert to fraction form
    2,715.30/3,745.08 = 1,719.54/x
  3. Step 3: Cross multiply
    2,715.30x = 3,745.08 × 1,719.54
  4. Step 4: Simplify right side
    2,715.30x = 6,439,814.86
  5. Step 5: Solve for x
    x = 6,439,814.86/2,715.30
  6. Step 6: Final answer
    x = 2,371.68

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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.