Home / 2,818.09-3,884.47-2,219.64

Finding the Fourth Proportional to 2,818.09, 3,884.47 and 2,219.64

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Solution

The fourth proportional to 2,818.09, 3,884.47 and 2,219.64 is: 3,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.09 : 3,884.47 = 2,219.64 : x
  2. Step 2: Convert to fraction form
    2,818.09/3,884.47 = 2,219.64/x
  3. Step 3: Cross multiply
    2,818.09x = 3,884.47 × 2,219.64
  4. Step 4: Simplify right side
    2,818.09x = 8,622,117.36
  5. Step 5: Solve for x
    x = 8,622,117.36/2,818.09
  6. Step 6: Final answer
    x = 3,059.56

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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.