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Finding the Fourth Proportional to 1,959.08, 2,703.78 and 1,131.08

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Solution

The fourth proportional to 1,959.08, 2,703.78 and 1,131.08 is: 1,561.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.08 : 2,703.78 = 1,131.08 : x
  2. Step 2: Convert to fraction form
    1,959.08/2,703.78 = 1,131.08/x
  3. Step 3: Cross multiply
    1,959.08x = 2,703.78 × 1,131.08
  4. Step 4: Simplify right side
    1,959.08x = 3,058,191.48
  5. Step 5: Solve for x
    x = 3,058,191.48/1,959.08
  6. Step 6: Final answer
    x = 1,561.03

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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.