Home / 2,815.58-3,884.31-1,884.38

Finding the Fourth Proportional to 2,815.58, 3,884.31 and 1,884.38

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Solution

The fourth proportional to 2,815.58, 3,884.31 and 1,884.38 is: 2,599.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.58 : 3,884.31 = 1,884.38 : x
  2. Step 2: Convert to fraction form
    2,815.58/3,884.31 = 1,884.38/x
  3. Step 3: Cross multiply
    2,815.58x = 3,884.31 × 1,884.38
  4. Step 4: Simplify right side
    2,815.58x = 7,319,516.08
  5. Step 5: Solve for x
    x = 7,319,516.08/2,815.58
  6. Step 6: Final answer
    x = 2,599.65

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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.