Home / 2,071.14-3,105.21-684.06

Finding the Fourth Proportional to 2,071.14, 3,105.21 and 684.06

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Solution

The fourth proportional to 2,071.14, 3,105.21 and 684.06 is: 1,025.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.14 : 3,105.21 = 684.06 : x
  2. Step 2: Convert to fraction form
    2,071.14/3,105.21 = 684.06/x
  3. Step 3: Cross multiply
    2,071.14x = 3,105.21 × 684.06
  4. Step 4: Simplify right side
    2,071.14x = 2,124,149.95
  5. Step 5: Solve for x
    x = 2,124,149.95/2,071.14
  6. Step 6: Final answer
    x = 1,025.59

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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.