Home / 3,821.65-5,266.74-2,981.03

Finding the Fourth Proportional to 3,821.65, 5,266.74 and 2,981.03

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Solution

The fourth proportional to 3,821.65, 5,266.74 and 2,981.03 is: 4,108.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.65 : 5,266.74 = 2,981.03 : x
  2. Step 2: Convert to fraction form
    3,821.65/5,266.74 = 2,981.03/x
  3. Step 3: Cross multiply
    3,821.65x = 5,266.74 × 2,981.03
  4. Step 4: Simplify right side
    3,821.65x = 15,700,309.94
  5. Step 5: Solve for x
    x = 15,700,309.94/3,821.65
  6. Step 6: Final answer
    x = 4,108.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.