Home / 4,271.78-6,405.39-2,190.94

Finding the Fourth Proportional to 4,271.78, 6,405.39 and 2,190.94

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Solution

The fourth proportional to 4,271.78, 6,405.39 and 2,190.94 is: 3,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,271.78 : 6,405.39 = 2,190.94 : x
  2. Step 2: Convert to fraction form
    4,271.78/6,405.39 = 2,190.94/x
  3. Step 3: Cross multiply
    4,271.78x = 6,405.39 × 2,190.94
  4. Step 4: Simplify right side
    4,271.78x = 14,033,809.15
  5. Step 5: Solve for x
    x = 14,033,809.15/4,271.78
  6. Step 6: Final answer
    x = 3,285.23

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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.