Home / 3,411.81-5,116.35-1,219.80

Finding the Fourth Proportional to 3,411.81, 5,116.35 and 1,219.80

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Solution

The fourth proportional to 3,411.81, 5,116.35 and 1,219.80 is: 1,829.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.81 : 5,116.35 = 1,219.80 : x
  2. Step 2: Convert to fraction form
    3,411.81/5,116.35 = 1,219.80/x
  3. Step 3: Cross multiply
    3,411.81x = 5,116.35 × 1,219.80
  4. Step 4: Simplify right side
    3,411.81x = 6,240,923.73
  5. Step 5: Solve for x
    x = 6,240,923.73/3,411.81
  6. Step 6: Final answer
    x = 1,829.21

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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.