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Finding the Fourth Proportional to 2,406.54, 3,609.32 and 1,107.68

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Solution

The fourth proportional to 2,406.54, 3,609.32 and 1,107.68 is: 1,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,406.54 : 3,609.32 = 1,107.68 : x
  2. Step 2: Convert to fraction form
    2,406.54/3,609.32 = 1,107.68/x
  3. Step 3: Cross multiply
    2,406.54x = 3,609.32 × 1,107.68
  4. Step 4: Simplify right side
    2,406.54x = 3,997,971.58
  5. Step 5: Solve for x
    x = 3,997,971.58/2,406.54
  6. Step 6: Final answer
    x = 1,661.29

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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.