Home / 2,984.40-4,107.60-2,143.80

Finding the Fourth Proportional to 2,984.40, 4,107.60 and 2,143.80

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Solution

The fourth proportional to 2,984.40, 4,107.60 and 2,143.80 is: 2,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.40 : 4,107.60 = 2,143.80 : x
  2. Step 2: Convert to fraction form
    2,984.40/4,107.60 = 2,143.80/x
  3. Step 3: Cross multiply
    2,984.40x = 4,107.60 × 2,143.80
  4. Step 4: Simplify right side
    2,984.40x = 8,805,872.88
  5. Step 5: Solve for x
    x = 8,805,872.88/2,984.40
  6. Step 6: Final answer
    x = 2,950.63

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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.