Home / 2,959.13-4,083.31-1,911.20

Finding the Fourth Proportional to 2,959.13, 4,083.31 and 1,911.20

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Solution

The fourth proportional to 2,959.13, 4,083.31 and 1,911.20 is: 2,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.13 : 4,083.31 = 1,911.20 : x
  2. Step 2: Convert to fraction form
    2,959.13/4,083.31 = 1,911.20/x
  3. Step 3: Cross multiply
    2,959.13x = 4,083.31 × 1,911.20
  4. Step 4: Simplify right side
    2,959.13x = 7,804,004.04
  5. Step 5: Solve for x
    x = 7,804,004.04/2,959.13
  6. Step 6: Final answer
    x = 2,637.26

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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.