Home / 1,383.80-2,077.65-1,109.03

Finding the Fourth Proportional to 1,383.80, 2,077.65 and 1,109.03

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Solution

The fourth proportional to 1,383.80, 2,077.65 and 1,109.03 is: 1,665.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.80 : 2,077.65 = 1,109.03 : x
  2. Step 2: Convert to fraction form
    1,383.80/2,077.65 = 1,109.03/x
  3. Step 3: Cross multiply
    1,383.80x = 2,077.65 × 1,109.03
  4. Step 4: Simplify right side
    1,383.80x = 2,304,176.18
  5. Step 5: Solve for x
    x = 2,304,176.18/1,383.80
  6. Step 6: Final answer
    x = 1,665.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.