Home / 3,818-5,727.38-1,220.28

Finding the Fourth Proportional to 3,818, 5,727.38 and 1,220.28

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Solution

The fourth proportional to 3,818, 5,727.38 and 1,220.28 is: 1,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818 : 5,727.38 = 1,220.28 : x
  2. Step 2: Convert to fraction form
    3,818/5,727.38 = 1,220.28/x
  3. Step 3: Cross multiply
    3,818x = 5,727.38 × 1,220.28
  4. Step 4: Simplify right side
    3,818x = 6,989,007.27
  5. Step 5: Solve for x
    x = 6,989,007.27/3,818
  6. Step 6: Final answer
    x = 1,830.54

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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.