Home / 4,219.50-6,330.94-2,138.38

Finding the Fourth Proportional to 4,219.50, 6,330.94 and 2,138.38

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Solution

The fourth proportional to 4,219.50, 6,330.94 and 2,138.38 is: 3,208.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.50 : 6,330.94 = 2,138.38 : x
  2. Step 2: Convert to fraction form
    4,219.50/6,330.94 = 2,138.38/x
  3. Step 3: Cross multiply
    4,219.50x = 6,330.94 × 2,138.38
  4. Step 4: Simplify right side
    4,219.50x = 13,537,955.48
  5. Step 5: Solve for x
    x = 13,537,955.48/4,219.50
  6. Step 6: Final answer
    x = 3,208.43

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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.