Home / 3,181.42-4,390.41-1,855.30

Finding the Fourth Proportional to 3,181.42, 4,390.41 and 1,855.30

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Solution

The fourth proportional to 3,181.42, 4,390.41 and 1,855.30 is: 2,560.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.42 : 4,390.41 = 1,855.30 : x
  2. Step 2: Convert to fraction form
    3,181.42/4,390.41 = 1,855.30/x
  3. Step 3: Cross multiply
    3,181.42x = 4,390.41 × 1,855.30
  4. Step 4: Simplify right side
    3,181.42x = 8,145,527.67
  5. Step 5: Solve for x
    x = 8,145,527.67/3,181.42
  6. Step 6: Final answer
    x = 2,560.34

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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.