Home / 2,103.60-2,902.94-1,219.40

Finding the Fourth Proportional to 2,103.60, 2,902.94 and 1,219.40

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Solution

The fourth proportional to 2,103.60, 2,902.94 and 1,219.40 is: 1,682.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.60 : 2,902.94 = 1,219.40 : x
  2. Step 2: Convert to fraction form
    2,103.60/2,902.94 = 1,219.40/x
  3. Step 3: Cross multiply
    2,103.60x = 2,902.94 × 1,219.40
  4. Step 4: Simplify right side
    2,103.60x = 3,539,845.04
  5. Step 5: Solve for x
    x = 3,539,845.04/2,103.60
  6. Step 6: Final answer
    x = 1,682.76

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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.