Home / 3,115.42-4,299.12-1,788.19

Finding the Fourth Proportional to 3,115.42, 4,299.12 and 1,788.19

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Solution

The fourth proportional to 3,115.42, 4,299.12 and 1,788.19 is: 2,467.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.42 : 4,299.12 = 1,788.19 : x
  2. Step 2: Convert to fraction form
    3,115.42/4,299.12 = 1,788.19/x
  3. Step 3: Cross multiply
    3,115.42x = 4,299.12 × 1,788.19
  4. Step 4: Simplify right side
    3,115.42x = 7,687,643.39
  5. Step 5: Solve for x
    x = 7,687,643.39/3,115.42
  6. Step 6: Final answer
    x = 2,467.61

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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.