Home / 2,105.39-2,905.44-1,161.19

Finding the Fourth Proportional to 2,105.39, 2,905.44 and 1,161.19

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Solution

The fourth proportional to 2,105.39, 2,905.44 and 1,161.19 is: 1,602.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105.39 : 2,905.44 = 1,161.19 : x
  2. Step 2: Convert to fraction form
    2,105.39/2,905.44 = 1,161.19/x
  3. Step 3: Cross multiply
    2,105.39x = 2,905.44 × 1,161.19
  4. Step 4: Simplify right side
    2,105.39x = 3,373,750.81
  5. Step 5: Solve for x
    x = 3,373,750.81/2,105.39
  6. Step 6: Final answer
    x = 1,602.43

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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.