Home / 1,985.49-2,739.88-1,101.27

Finding the Fourth Proportional to 1,985.49, 2,739.88 and 1,101.27

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Solution

The fourth proportional to 1,985.49, 2,739.88 and 1,101.27 is: 1,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.49 : 2,739.88 = 1,101.27 : x
  2. Step 2: Convert to fraction form
    1,985.49/2,739.88 = 1,101.27/x
  3. Step 3: Cross multiply
    1,985.49x = 2,739.88 × 1,101.27
  4. Step 4: Simplify right side
    1,985.49x = 3,017,342.14
  5. Step 5: Solve for x
    x = 3,017,342.14/1,985.49
  6. Step 6: Final answer
    x = 1,519.70

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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.