Home / 2,478.26-3,418.62-1,581.68

Finding the Fourth Proportional to 2,478.26, 3,418.62 and 1,581.68

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Solution

The fourth proportional to 2,478.26, 3,418.62 and 1,581.68 is: 2,181.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.26 : 3,418.62 = 1,581.68 : x
  2. Step 2: Convert to fraction form
    2,478.26/3,418.62 = 1,581.68/x
  3. Step 3: Cross multiply
    2,478.26x = 3,418.62 × 1,581.68
  4. Step 4: Simplify right side
    2,478.26x = 5,407,162.88
  5. Step 5: Solve for x
    x = 5,407,162.88/2,478.26
  6. Step 6: Final answer
    x = 2,181.84

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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.