Home / 1,948.80-2,917.44-1,219.20

Finding the Fourth Proportional to 1,948.80, 2,917.44 and 1,219.20

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Solution

The fourth proportional to 1,948.80, 2,917.44 and 1,219.20 is: 1,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.80 : 2,917.44 = 1,219.20 : x
  2. Step 2: Convert to fraction form
    1,948.80/2,917.44 = 1,219.20/x
  3. Step 3: Cross multiply
    1,948.80x = 2,917.44 × 1,219.20
  4. Step 4: Simplify right side
    1,948.80x = 3,556,942.85
  5. Step 5: Solve for x
    x = 3,556,942.85/1,948.80
  6. Step 6: Final answer
    x = 1,825.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.