Home / 6,628.90-9,940.11-3,856.54

Finding the Fourth Proportional to 6,628.90, 9,940.11 and 3,856.54

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Solution

The fourth proportional to 6,628.90, 9,940.11 and 3,856.54 is: 5,782.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.90 : 9,940.11 = 3,856.54 : x
  2. Step 2: Convert to fraction form
    6,628.90/9,940.11 = 3,856.54/x
  3. Step 3: Cross multiply
    6,628.90x = 9,940.11 × 3,856.54
  4. Step 4: Simplify right side
    6,628.90x = 38,334,431.82
  5. Step 5: Solve for x
    x = 38,334,431.82/6,628.90
  6. Step 6: Final answer
    x = 5,782.93

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1.5x scale

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.