Home / 1,988.88-2,744.10-1,243.60

Finding the Fourth Proportional to 1,988.88, 2,744.10 and 1,243.60

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Solution

The fourth proportional to 1,988.88, 2,744.10 and 1,243.60 is: 1,715.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.88 : 2,744.10 = 1,243.60 : x
  2. Step 2: Convert to fraction form
    1,988.88/2,744.10 = 1,243.60/x
  3. Step 3: Cross multiply
    1,988.88x = 2,744.10 × 1,243.60
  4. Step 4: Simplify right side
    1,988.88x = 3,412,562.76
  5. Step 5: Solve for x
    x = 3,412,562.76/1,988.88
  6. Step 6: Final answer
    x = 1,715.82

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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.