Home / 2,126.24-3,181.15-2,120.77

Finding the Fourth Proportional to 2,126.24, 3,181.15 and 2,120.77

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Solution

The fourth proportional to 2,126.24, 3,181.15 and 2,120.77 is: 3,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.24 : 3,181.15 = 2,120.77 : x
  2. Step 2: Convert to fraction form
    2,126.24/3,181.15 = 2,120.77/x
  3. Step 3: Cross multiply
    2,126.24x = 3,181.15 × 2,120.77
  4. Step 4: Simplify right side
    2,126.24x = 6,746,487.49
  5. Step 5: Solve for x
    x = 6,746,487.49/2,126.24
  6. Step 6: Final answer
    x = 3,172.97

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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.