Home / 1,911.16-2,634.78-1,579.48

Finding the Fourth Proportional to 1,911.16, 2,634.78 and 1,579.48

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Solution

The fourth proportional to 1,911.16, 2,634.78 and 1,579.48 is: 2,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.16 : 2,634.78 = 1,579.48 : x
  2. Step 2: Convert to fraction form
    1,911.16/2,634.78 = 1,579.48/x
  3. Step 3: Cross multiply
    1,911.16x = 2,634.78 × 1,579.48
  4. Step 4: Simplify right side
    1,911.16x = 4,161,582.31
  5. Step 5: Solve for x
    x = 4,161,582.31/1,911.16
  6. Step 6: Final answer
    x = 2,177.52

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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.