Home / 3,878.09-5,815.32-1,799.07

Finding the Fourth Proportional to 3,878.09, 5,815.32 and 1,799.07

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Solution

The fourth proportional to 3,878.09, 5,815.32 and 1,799.07 is: 2,697.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.09 : 5,815.32 = 1,799.07 : x
  2. Step 2: Convert to fraction form
    3,878.09/5,815.32 = 1,799.07/x
  3. Step 3: Cross multiply
    3,878.09x = 5,815.32 × 1,799.07
  4. Step 4: Simplify right side
    3,878.09x = 10,462,167.75
  5. Step 5: Solve for x
    x = 10,462,167.75/3,878.09
  6. Step 6: Final answer
    x = 2,697.77

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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.