Home / 3,091.90-4,634.73-2,118.30

Finding the Fourth Proportional to 3,091.90, 4,634.73 and 2,118.30

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Solution

The fourth proportional to 3,091.90, 4,634.73 and 2,118.30 is: 3,175.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.90 : 4,634.73 = 2,118.30 : x
  2. Step 2: Convert to fraction form
    3,091.90/4,634.73 = 2,118.30/x
  3. Step 3: Cross multiply
    3,091.90x = 4,634.73 × 2,118.30
  4. Step 4: Simplify right side
    3,091.90x = 9,817,748.56
  5. Step 5: Solve for x
    x = 9,817,748.56/3,091.90
  6. Step 6: Final answer
    x = 3,175.31

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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.