Home / 2,949.45-4,043.86-2,896.80

Finding the Fourth Proportional to 2,949.45, 4,043.86 and 2,896.80

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Solution

The fourth proportional to 2,949.45, 4,043.86 and 2,896.80 is: 3,971.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,949.45 : 4,043.86 = 2,896.80 : x
  2. Step 2: Convert to fraction form
    2,949.45/4,043.86 = 2,896.80/x
  3. Step 3: Cross multiply
    2,949.45x = 4,043.86 × 2,896.80
  4. Step 4: Simplify right side
    2,949.45x = 11,714,253.65
  5. Step 5: Solve for x
    x = 11,714,253.65/2,949.45
  6. Step 6: Final answer
    x = 3,971.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.