Home / 2,143.56-3,215.88-2,106.84

Finding the Fourth Proportional to 2,143.56, 3,215.88 and 2,106.84

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Solution

The fourth proportional to 2,143.56, 3,215.88 and 2,106.84 is: 3,160.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.56 : 3,215.88 = 2,106.84 : x
  2. Step 2: Convert to fraction form
    2,143.56/3,215.88 = 2,106.84/x
  3. Step 3: Cross multiply
    2,143.56x = 3,215.88 × 2,106.84
  4. Step 4: Simplify right side
    2,143.56x = 6,775,344.62
  5. Step 5: Solve for x
    x = 6,775,344.62/2,143.56
  6. Step 6: Final answer
    x = 3,160.79

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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.