Home / 5,111.51-7,054.09-2,873.42

Finding the Fourth Proportional to 5,111.51, 7,054.09 and 2,873.42

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Solution

The fourth proportional to 5,111.51, 7,054.09 and 2,873.42 is: 3,965.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.51 : 7,054.09 = 2,873.42 : x
  2. Step 2: Convert to fraction form
    5,111.51/7,054.09 = 2,873.42/x
  3. Step 3: Cross multiply
    5,111.51x = 7,054.09 × 2,873.42
  4. Step 4: Simplify right side
    5,111.51x = 20,269,386.97
  5. Step 5: Solve for x
    x = 20,269,386.97/5,111.51
  6. Step 6: Final answer
    x = 3,965.44

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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.