Home / 1,271.44-1,763.50-1,219.60

Finding the Fourth Proportional to 1,271.44, 1,763.50 and 1,219.60

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Solution

The fourth proportional to 1,271.44, 1,763.50 and 1,219.60 is: 1,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.44 : 1,763.50 = 1,219.60 : x
  2. Step 2: Convert to fraction form
    1,271.44/1,763.50 = 1,219.60/x
  3. Step 3: Cross multiply
    1,271.44x = 1,763.50 × 1,219.60
  4. Step 4: Simplify right side
    1,271.44x = 2,150,764.60
  5. Step 5: Solve for x
    x = 2,150,764.60/1,271.44
  6. Step 6: Final answer
    x = 1,691.60

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.