Home / 3,820-5,723.30-2,718.60

Finding the Fourth Proportional to 3,820, 5,723.30 and 2,718.60

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Solution

The fourth proportional to 3,820, 5,723.30 and 2,718.60 is: 4,073.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820 : 5,723.30 = 2,718.60 : x
  2. Step 2: Convert to fraction form
    3,820/5,723.30 = 2,718.60/x
  3. Step 3: Cross multiply
    3,820x = 5,723.30 × 2,718.60
  4. Step 4: Simplify right side
    3,820x = 15,559,363.38
  5. Step 5: Solve for x
    x = 15,559,363.38/3,820
  6. Step 6: Final answer
    x = 4,073.13

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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.