Home / 6,388.30-9,581.85-2,878.54

Finding the Fourth Proportional to 6,388.30, 9,581.85 and 2,878.54

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Solution

The fourth proportional to 6,388.30, 9,581.85 and 2,878.54 is: 4,317.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.30 : 9,581.85 = 2,878.54 : x
  2. Step 2: Convert to fraction form
    6,388.30/9,581.85 = 2,878.54/x
  3. Step 3: Cross multiply
    6,388.30x = 9,581.85 × 2,878.54
  4. Step 4: Simplify right side
    6,388.30x = 27,581,738.50
  5. Step 5: Solve for x
    x = 27,581,738.50/6,388.30
  6. Step 6: Final answer
    x = 4,317.54

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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.