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Finding the Fourth Proportional to 3,154.75, 4,734.86 and 1,208.32

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Solution

The fourth proportional to 3,154.75, 4,734.86 and 1,208.32 is: 1,813.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.75 : 4,734.86 = 1,208.32 : x
  2. Step 2: Convert to fraction form
    3,154.75/4,734.86 = 1,208.32/x
  3. Step 3: Cross multiply
    3,154.75x = 4,734.86 × 1,208.32
  4. Step 4: Simplify right side
    3,154.75x = 5,721,208.16
  5. Step 5: Solve for x
    x = 5,721,208.16/3,154.75
  6. Step 6: Final answer
    x = 1,813.52

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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.