Home / 2,823.24-3,893.40-2,123.40

Finding the Fourth Proportional to 2,823.24, 3,893.40 and 2,123.40

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Solution

The fourth proportional to 2,823.24, 3,893.40 and 2,123.40 is: 2,928.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.24 : 3,893.40 = 2,123.40 : x
  2. Step 2: Convert to fraction form
    2,823.24/3,893.40 = 2,123.40/x
  3. Step 3: Cross multiply
    2,823.24x = 3,893.40 × 2,123.40
  4. Step 4: Simplify right side
    2,823.24x = 8,267,245.56
  5. Step 5: Solve for x
    x = 8,267,245.56/2,823.24
  6. Step 6: Final answer
    x = 2,928.28

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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.