Home / 4,212.34-6,318.74-2,129.90

Finding the Fourth Proportional to 4,212.34, 6,318.74 and 2,129.90

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Solution

The fourth proportional to 4,212.34, 6,318.74 and 2,129.90 is: 3,194.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.34 : 6,318.74 = 2,129.90 : x
  2. Step 2: Convert to fraction form
    4,212.34/6,318.74 = 2,129.90/x
  3. Step 3: Cross multiply
    4,212.34x = 6,318.74 × 2,129.90
  4. Step 4: Simplify right side
    4,212.34x = 13,458,258.06
  5. Step 5: Solve for x
    x = 13,458,258.06/4,212.34
  6. Step 6: Final answer
    x = 3,194.96

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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.