Home / 3,181.58-4,388.88-1,854.80

Finding the Fourth Proportional to 3,181.58, 4,388.88 and 1,854.80

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Solution

The fourth proportional to 3,181.58, 4,388.88 and 1,854.80 is: 2,558.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.58 : 4,388.88 = 1,854.80 : x
  2. Step 2: Convert to fraction form
    3,181.58/4,388.88 = 1,854.80/x
  3. Step 3: Cross multiply
    3,181.58x = 4,388.88 × 1,854.80
  4. Step 4: Simplify right side
    3,181.58x = 8,140,496.09
  5. Step 5: Solve for x
    x = 8,140,496.09/3,181.58
  6. Step 6: Final answer
    x = 2,558.63

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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.