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Finding the Fourth Proportional to 2,485.02, 3,722.04 and 2,255.40

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Solution

The fourth proportional to 2,485.02, 3,722.04 and 2,255.40 is: 3,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.02 : 3,722.04 = 2,255.40 : x
  2. Step 2: Convert to fraction form
    2,485.02/3,722.04 = 2,255.40/x
  3. Step 3: Cross multiply
    2,485.02x = 3,722.04 × 2,255.40
  4. Step 4: Simplify right side
    2,485.02x = 8,394,689.02
  5. Step 5: Solve for x
    x = 8,394,689.02/2,485.02
  6. Step 6: Final answer
    x = 3,378.12

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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.