Home / 3,191.90-4,779.81-2,018.34

Finding the Fourth Proportional to 3,191.90, 4,779.81 and 2,018.34

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Solution

The fourth proportional to 3,191.90, 4,779.81 and 2,018.34 is: 3,022.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.90 : 4,779.81 = 2,018.34 : x
  2. Step 2: Convert to fraction form
    3,191.90/4,779.81 = 2,018.34/x
  3. Step 3: Cross multiply
    3,191.90x = 4,779.81 × 2,018.34
  4. Step 4: Simplify right side
    3,191.90x = 9,647,281.72
  5. Step 5: Solve for x
    x = 9,647,281.72/3,191.90
  6. Step 6: Final answer
    x = 3,022.43

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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.