Home / 1,988.64-2,744.36-1,202.69

Finding the Fourth Proportional to 1,988.64, 2,744.36 and 1,202.69

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Solution

The fourth proportional to 1,988.64, 2,744.36 and 1,202.69 is: 1,659.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.64 : 2,744.36 = 1,202.69 : x
  2. Step 2: Convert to fraction form
    1,988.64/2,744.36 = 1,202.69/x
  3. Step 3: Cross multiply
    1,988.64x = 2,744.36 × 1,202.69
  4. Step 4: Simplify right side
    1,988.64x = 3,300,615.18
  5. Step 5: Solve for x
    x = 3,300,615.18/1,988.64
  6. Step 6: Final answer
    x = 1,659.73

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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.