Home / 2,940.78-4,412.22-1,816.32

Finding the Fourth Proportional to 2,940.78, 4,412.22 and 1,816.32

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Solution

The fourth proportional to 2,940.78, 4,412.22 and 1,816.32 is: 2,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.78 : 4,412.22 = 1,816.32 : x
  2. Step 2: Convert to fraction form
    2,940.78/4,412.22 = 1,816.32/x
  3. Step 3: Cross multiply
    2,940.78x = 4,412.22 × 1,816.32
  4. Step 4: Simplify right side
    2,940.78x = 8,014,003.43
  5. Step 5: Solve for x
    x = 8,014,003.43/2,940.78
  6. Step 6: Final answer
    x = 2,725.13

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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.