Home / 7,872.24-11,808.36-2,678

Finding the Fourth Proportional to 7,872.24, 11,808.36 and 2,678

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Solution

The fourth proportional to 7,872.24, 11,808.36 and 2,678 is: 4,017.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.24 : 11,808.36 = 2,678 : x
  2. Step 2: Convert to fraction form
    7,872.24/11,808.36 = 2,678/x
  3. Step 3: Cross multiply
    7,872.24x = 11,808.36 × 2,678
  4. Step 4: Simplify right side
    7,872.24x = 31,622,788.08
  5. Step 5: Solve for x
    x = 31,622,788.08/7,872.24
  6. Step 6: Final answer
    x = 4,017.00

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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.