Home / 2,912.60-4,019.82-1,653.78

Finding the Fourth Proportional to 2,912.60, 4,019.82 and 1,653.78

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Solution

The fourth proportional to 2,912.60, 4,019.82 and 1,653.78 is: 2,282.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.60 : 4,019.82 = 1,653.78 : x
  2. Step 2: Convert to fraction form
    2,912.60/4,019.82 = 1,653.78/x
  3. Step 3: Cross multiply
    2,912.60x = 4,019.82 × 1,653.78
  4. Step 4: Simplify right side
    2,912.60x = 6,647,897.92
  5. Step 5: Solve for x
    x = 6,647,897.92/2,912.60
  6. Step 6: Final answer
    x = 2,282.46

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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.