Home / 7,828.10-11,738.31-3,874.79

Finding the Fourth Proportional to 7,828.10, 11,738.31 and 3,874.79

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Solution

The fourth proportional to 7,828.10, 11,738.31 and 3,874.79 is: 5,810.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.10 : 11,738.31 = 3,874.79 : x
  2. Step 2: Convert to fraction form
    7,828.10/11,738.31 = 3,874.79/x
  3. Step 3: Cross multiply
    7,828.10x = 11,738.31 × 3,874.79
  4. Step 4: Simplify right side
    7,828.10x = 45,483,486.20
  5. Step 5: Solve for x
    x = 45,483,486.20/7,828.10
  6. Step 6: Final answer
    x = 5,810.28

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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.