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Finding the Fourth Proportional to 3,442.36, 5,163.49 and 845.30

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Solution

The fourth proportional to 3,442.36, 5,163.49 and 845.30 is: 1,267.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,442.36 : 5,163.49 = 845.30 : x
  2. Step 2: Convert to fraction form
    3,442.36/5,163.49 = 845.30/x
  3. Step 3: Cross multiply
    3,442.36x = 5,163.49 × 845.30
  4. Step 4: Simplify right side
    3,442.36x = 4,364,698.10
  5. Step 5: Solve for x
    x = 4,364,698.10/3,442.36
  6. Step 6: Final answer
    x = 1,267.94

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1.5x scale

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.