Home / 3,021.40-4,173.78-2,331.64

Finding the Fourth Proportional to 3,021.40, 4,173.78 and 2,331.64

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Solution

The fourth proportional to 3,021.40, 4,173.78 and 2,331.64 is: 3,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.40 : 4,173.78 = 2,331.64 : x
  2. Step 2: Convert to fraction form
    3,021.40/4,173.78 = 2,331.64/x
  3. Step 3: Cross multiply
    3,021.40x = 4,173.78 × 2,331.64
  4. Step 4: Simplify right side
    3,021.40x = 9,731,752.40
  5. Step 5: Solve for x
    x = 9,731,752.40/3,021.40
  6. Step 6: Final answer
    x = 3,220.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.