Home / 2,991.13-4,127.54-1,872

Finding the Fourth Proportional to 2,991.13, 4,127.54 and 1,872

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Solution

The fourth proportional to 2,991.13, 4,127.54 and 1,872 is: 2,583.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.13 : 4,127.54 = 1,872 : x
  2. Step 2: Convert to fraction form
    2,991.13/4,127.54 = 1,872/x
  3. Step 3: Cross multiply
    2,991.13x = 4,127.54 × 1,872
  4. Step 4: Simplify right side
    2,991.13x = 7,726,745.52
  5. Step 5: Solve for x
    x = 7,726,745.52/2,991.13
  6. Step 6: Final answer
    x = 2,583.22

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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.