Home / 3,975.20-5,962.80-2,225.60

Finding the Fourth Proportional to 3,975.20, 5,962.80 and 2,225.60

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Solution

The fourth proportional to 3,975.20, 5,962.80 and 2,225.60 is: 3,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.20 : 5,962.80 = 2,225.60 : x
  2. Step 2: Convert to fraction form
    3,975.20/5,962.80 = 2,225.60/x
  3. Step 3: Cross multiply
    3,975.20x = 5,962.80 × 2,225.60
  4. Step 4: Simplify right side
    3,975.20x = 13,270,807.68
  5. Step 5: Solve for x
    x = 13,270,807.68/3,975.20
  6. Step 6: Final answer
    x = 3,338.40

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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.