Home / 1,922.40-2,653.05-1,083.20

Finding the Fourth Proportional to 1,922.40, 2,653.05 and 1,083.20

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Solution

The fourth proportional to 1,922.40, 2,653.05 and 1,083.20 is: 1,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.40 : 2,653.05 = 1,083.20 : x
  2. Step 2: Convert to fraction form
    1,922.40/2,653.05 = 1,083.20/x
  3. Step 3: Cross multiply
    1,922.40x = 2,653.05 × 1,083.20
  4. Step 4: Simplify right side
    1,922.40x = 2,873,770.49
  5. Step 5: Solve for x
    x = 2,873,770.49/1,922.40
  6. Step 6: Final answer
    x = 1,494.89

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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.