Home / 2,858.46-3,940.74-2,796.36

Finding the Fourth Proportional to 2,858.46, 3,940.74 and 2,796.36

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Solution

The fourth proportional to 2,858.46, 3,940.74 and 2,796.36 is: 3,855.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.46 : 3,940.74 = 2,796.36 : x
  2. Step 2: Convert to fraction form
    2,858.46/3,940.74 = 2,796.36/x
  3. Step 3: Cross multiply
    2,858.46x = 3,940.74 × 2,796.36
  4. Step 4: Simplify right side
    2,858.46x = 11,019,727.71
  5. Step 5: Solve for x
    x = 11,019,727.71/2,858.46
  6. Step 6: Final answer
    x = 3,855.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.