Home / 1,905.63-2,629.80-1,119.66

Finding the Fourth Proportional to 1,905.63, 2,629.80 and 1,119.66

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Solution

The fourth proportional to 1,905.63, 2,629.80 and 1,119.66 is: 1,545.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.63 : 2,629.80 = 1,119.66 : x
  2. Step 2: Convert to fraction form
    1,905.63/2,629.80 = 1,119.66/x
  3. Step 3: Cross multiply
    1,905.63x = 2,629.80 × 1,119.66
  4. Step 4: Simplify right side
    1,905.63x = 2,944,481.87
  5. Step 5: Solve for x
    x = 2,944,481.87/1,905.63
  6. Step 6: Final answer
    x = 1,545.15

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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.