Home / 2,815.33-3,884.49-1,820.41

Finding the Fourth Proportional to 2,815.33, 3,884.49 and 1,820.41

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Solution

The fourth proportional to 2,815.33, 3,884.49 and 1,820.41 is: 2,511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.33 : 3,884.49 = 1,820.41 : x
  2. Step 2: Convert to fraction form
    2,815.33/3,884.49 = 1,820.41/x
  3. Step 3: Cross multiply
    2,815.33x = 3,884.49 × 1,820.41
  4. Step 4: Simplify right side
    2,815.33x = 7,071,364.44
  5. Step 5: Solve for x
    x = 7,071,364.44/2,815.33
  6. Step 6: Final answer
    x = 2,511.74

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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.