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Finding the Fourth Proportional to 3,745.70, 5,167.23 and 2,420.54

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Solution

The fourth proportional to 3,745.70, 5,167.23 and 2,420.54 is: 3,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.70 : 5,167.23 = 2,420.54 : x
  2. Step 2: Convert to fraction form
    3,745.70/5,167.23 = 2,420.54/x
  3. Step 3: Cross multiply
    3,745.70x = 5,167.23 × 2,420.54
  4. Step 4: Simplify right side
    3,745.70x = 12,507,486.90
  5. Step 5: Solve for x
    x = 12,507,486.90/3,745.70
  6. Step 6: Final answer
    x = 3,339.16

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1.5x scale

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.