Home / 2,103.84-2,903.45-1,219.95

Finding the Fourth Proportional to 2,103.84, 2,903.45 and 1,219.95

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Solution

The fourth proportional to 2,103.84, 2,903.45 and 1,219.95 is: 1,683.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.84 : 2,903.45 = 1,219.95 : x
  2. Step 2: Convert to fraction form
    2,103.84/2,903.45 = 1,219.95/x
  3. Step 3: Cross multiply
    2,103.84x = 2,903.45 × 1,219.95
  4. Step 4: Simplify right side
    2,103.84x = 3,542,057.73
  5. Step 5: Solve for x
    x = 3,542,057.73/2,103.84
  6. Step 6: Final answer
    x = 1,683.62

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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.