Home / 1,988.21-2,743.54-1,104.03

Finding the Fourth Proportional to 1,988.21, 2,743.54 and 1,104.03

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Solution

The fourth proportional to 1,988.21, 2,743.54 and 1,104.03 is: 1,523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.21 : 2,743.54 = 1,104.03 : x
  2. Step 2: Convert to fraction form
    1,988.21/2,743.54 = 1,104.03/x
  3. Step 3: Cross multiply
    1,988.21x = 2,743.54 × 1,104.03
  4. Step 4: Simplify right side
    1,988.21x = 3,028,947.71
  5. Step 5: Solve for x
    x = 3,028,947.71/1,988.21
  6. Step 6: Final answer
    x = 1,523.45

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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.