Home / 1,942.88-2,681.28-1,103.60

Finding the Fourth Proportional to 1,942.88, 2,681.28 and 1,103.60

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Solution

The fourth proportional to 1,942.88, 2,681.28 and 1,103.60 is: 1,523.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.88 : 2,681.28 = 1,103.60 : x
  2. Step 2: Convert to fraction form
    1,942.88/2,681.28 = 1,103.60/x
  3. Step 3: Cross multiply
    1,942.88x = 2,681.28 × 1,103.60
  4. Step 4: Simplify right side
    1,942.88x = 2,959,060.61
  5. Step 5: Solve for x
    x = 2,959,060.61/1,942.88
  6. Step 6: Final answer
    x = 1,523.03

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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.