Home / 3,219.50-4,829.80-1,371.50

Finding the Fourth Proportional to 3,219.50, 4,829.80 and 1,371.50

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Solution

The fourth proportional to 3,219.50, 4,829.80 and 1,371.50 is: 2,057.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.50 : 4,829.80 = 1,371.50 : x
  2. Step 2: Convert to fraction form
    3,219.50/4,829.80 = 1,371.50/x
  3. Step 3: Cross multiply
    3,219.50x = 4,829.80 × 1,371.50
  4. Step 4: Simplify right side
    3,219.50x = 6,624,070.70
  5. Step 5: Solve for x
    x = 6,624,070.70/3,219.50
  6. Step 6: Final answer
    x = 2,057.48

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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.