Home / 2,972.34-4,458.60-2,485.80

Finding the Fourth Proportional to 2,972.34, 4,458.60 and 2,485.80

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Solution

The fourth proportional to 2,972.34, 4,458.60 and 2,485.80 is: 3,728.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.34 : 4,458.60 = 2,485.80 : x
  2. Step 2: Convert to fraction form
    2,972.34/4,458.60 = 2,485.80/x
  3. Step 3: Cross multiply
    2,972.34x = 4,458.60 × 2,485.80
  4. Step 4: Simplify right side
    2,972.34x = 11,083,187.88
  5. Step 5: Solve for x
    x = 11,083,187.88/2,972.34
  6. Step 6: Final answer
    x = 3,728.78

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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.