Home / 1,985.43-2,739.86-1,101.22

Finding the Fourth Proportional to 1,985.43, 2,739.86 and 1,101.22

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Solution

The fourth proportional to 1,985.43, 2,739.86 and 1,101.22 is: 1,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.43 : 2,739.86 = 1,101.22 : x
  2. Step 2: Convert to fraction form
    1,985.43/2,739.86 = 1,101.22/x
  3. Step 3: Cross multiply
    1,985.43x = 2,739.86 × 1,101.22
  4. Step 4: Simplify right side
    1,985.43x = 3,017,176.27
  5. Step 5: Solve for x
    x = 3,017,176.27/1,985.43
  6. Step 6: Final answer
    x = 1,519.66

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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.