Home / 2,170.21-2,994.68-1,212.95

Finding the Fourth Proportional to 2,170.21, 2,994.68 and 1,212.95

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Solution

The fourth proportional to 2,170.21, 2,994.68 and 1,212.95 is: 1,673.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.21 : 2,994.68 = 1,212.95 : x
  2. Step 2: Convert to fraction form
    2,170.21/2,994.68 = 1,212.95/x
  3. Step 3: Cross multiply
    2,170.21x = 2,994.68 × 1,212.95
  4. Step 4: Simplify right side
    2,170.21x = 3,632,379.10
  5. Step 5: Solve for x
    x = 3,632,379.10/2,170.21
  6. Step 6: Final answer
    x = 1,673.74

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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.