Home / 2,112.60-3,168.90-2,098.20

Finding the Fourth Proportional to 2,112.60, 3,168.90 and 2,098.20

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Solution

The fourth proportional to 2,112.60, 3,168.90 and 2,098.20 is: 3,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.60 : 3,168.90 = 2,098.20 : x
  2. Step 2: Convert to fraction form
    2,112.60/3,168.90 = 2,098.20/x
  3. Step 3: Cross multiply
    2,112.60x = 3,168.90 × 2,098.20
  4. Step 4: Simplify right side
    2,112.60x = 6,648,985.98
  5. Step 5: Solve for x
    x = 6,648,985.98/2,112.60
  6. Step 6: Final answer
    x = 3,147.30

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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.