Home / 2,838.30-3,912.81-2,207.72

Finding the Fourth Proportional to 2,838.30, 3,912.81 and 2,207.72

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Solution

The fourth proportional to 2,838.30, 3,912.81 and 2,207.72 is: 3,043.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.30 : 3,912.81 = 2,207.72 : x
  2. Step 2: Convert to fraction form
    2,838.30/3,912.81 = 2,207.72/x
  3. Step 3: Cross multiply
    2,838.30x = 3,912.81 × 2,207.72
  4. Step 4: Simplify right side
    2,838.30x = 8,638,369.33
  5. Step 5: Solve for x
    x = 8,638,369.33/2,838.30
  6. Step 6: Final answer
    x = 3,043.50

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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.