Home / 3,818.18-5,727.81-1,220.51

Finding the Fourth Proportional to 3,818.18, 5,727.81 and 1,220.51

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Solution

The fourth proportional to 3,818.18, 5,727.81 and 1,220.51 is: 1,830.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.18 : 5,727.81 = 1,220.51 : x
  2. Step 2: Convert to fraction form
    3,818.18/5,727.81 = 1,220.51/x
  3. Step 3: Cross multiply
    3,818.18x = 5,727.81 × 1,220.51
  4. Step 4: Simplify right side
    3,818.18x = 6,990,849.38
  5. Step 5: Solve for x
    x = 6,990,849.38/3,818.18
  6. Step 6: Final answer
    x = 1,830.94

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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.