Home / 2,949.21-4,071.19-2,108.46

Finding the Fourth Proportional to 2,949.21, 4,071.19 and 2,108.46

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Solution

The fourth proportional to 2,949.21, 4,071.19 and 2,108.46 is: 2,910.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,949.21 : 4,071.19 = 2,108.46 : x
  2. Step 2: Convert to fraction form
    2,949.21/4,071.19 = 2,108.46/x
  3. Step 3: Cross multiply
    2,949.21x = 4,071.19 × 2,108.46
  4. Step 4: Simplify right side
    2,949.21x = 8,583,914.94
  5. Step 5: Solve for x
    x = 8,583,914.94/2,949.21
  6. Step 6: Final answer
    x = 2,910.58

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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.