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Finding the Fourth Proportional to 3,009.45, 4,511.45 and 1,161.79

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Solution

The fourth proportional to 3,009.45, 4,511.45 and 1,161.79 is: 1,741.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.45 : 4,511.45 = 1,161.79 : x
  2. Step 2: Convert to fraction form
    3,009.45/4,511.45 = 1,161.79/x
  3. Step 3: Cross multiply
    3,009.45x = 4,511.45 × 1,161.79
  4. Step 4: Simplify right side
    3,009.45x = 5,241,367.96
  5. Step 5: Solve for x
    x = 5,241,367.96/3,009.45
  6. Step 6: Final answer
    x = 1,741.63

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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.