Home / 3,219.78-4,829.67-1,028.70

Finding the Fourth Proportional to 3,219.78, 4,829.67 and 1,028.70

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Solution

The fourth proportional to 3,219.78, 4,829.67 and 1,028.70 is: 1,543.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.78 : 4,829.67 = 1,028.70 : x
  2. Step 2: Convert to fraction form
    3,219.78/4,829.67 = 1,028.70/x
  3. Step 3: Cross multiply
    3,219.78x = 4,829.67 × 1,028.70
  4. Step 4: Simplify right side
    3,219.78x = 4,968,281.53
  5. Step 5: Solve for x
    x = 4,968,281.53/3,219.78
  6. Step 6: Final answer
    x = 1,543.05

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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.