Home / 8,821.84-13,231.98-2,978.56

Finding the Fourth Proportional to 8,821.84, 13,231.98 and 2,978.56

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Solution

The fourth proportional to 8,821.84, 13,231.98 and 2,978.56 is: 4,467.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.84 : 13,231.98 = 2,978.56 : x
  2. Step 2: Convert to fraction form
    8,821.84/13,231.98 = 2,978.56/x
  3. Step 3: Cross multiply
    8,821.84x = 13,231.98 × 2,978.56
  4. Step 4: Simplify right side
    8,821.84x = 39,412,246.35
  5. Step 5: Solve for x
    x = 39,412,246.35/8,821.84
  6. Step 6: Final answer
    x = 4,467.58

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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.