Home / 3,878.63-5,815.51-2,824.82

Finding the Fourth Proportional to 3,878.63, 5,815.51 and 2,824.82

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Solution

The fourth proportional to 3,878.63, 5,815.51 and 2,824.82 is: 4,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.63 : 5,815.51 = 2,824.82 : x
  2. Step 2: Convert to fraction form
    3,878.63/5,815.51 = 2,824.82/x
  3. Step 3: Cross multiply
    3,878.63x = 5,815.51 × 2,824.82
  4. Step 4: Simplify right side
    3,878.63x = 16,427,732.82
  5. Step 5: Solve for x
    x = 16,427,732.82/3,878.63
  6. Step 6: Final answer
    x = 4,235.45

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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.