Home / 1,985.29-2,739.69-1,101.09

Finding the Fourth Proportional to 1,985.29, 2,739.69 and 1,101.09

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Solution

The fourth proportional to 1,985.29, 2,739.69 and 1,101.09 is: 1,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.29 : 2,739.69 = 1,101.09 : x
  2. Step 2: Convert to fraction form
    1,985.29/2,739.69 = 1,101.09/x
  3. Step 3: Cross multiply
    1,985.29x = 2,739.69 × 1,101.09
  4. Step 4: Simplify right side
    1,985.29x = 3,016,645.26
  5. Step 5: Solve for x
    x = 3,016,645.26/1,985.29
  6. Step 6: Final answer
    x = 1,519.50

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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.