Home / 2,105.58-2,905.68-1,161.32

Finding the Fourth Proportional to 2,105.58, 2,905.68 and 1,161.32

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Solution

The fourth proportional to 2,105.58, 2,905.68 and 1,161.32 is: 1,602.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105.58 : 2,905.68 = 1,161.32 : x
  2. Step 2: Convert to fraction form
    2,105.58/2,905.68 = 1,161.32/x
  3. Step 3: Cross multiply
    2,105.58x = 2,905.68 × 1,161.32
  4. Step 4: Simplify right side
    2,105.58x = 3,374,424.30
  5. Step 5: Solve for x
    x = 3,374,424.30/2,105.58
  6. Step 6: Final answer
    x = 1,602.61

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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.