Home / 5,623.48-8,439.80-3,981.60

Finding the Fourth Proportional to 5,623.48, 8,439.80 and 3,981.60

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Solution

The fourth proportional to 5,623.48, 8,439.80 and 3,981.60 is: 5,975.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,623.48 : 8,439.80 = 3,981.60 : x
  2. Step 2: Convert to fraction form
    5,623.48/8,439.80 = 3,981.60/x
  3. Step 3: Cross multiply
    5,623.48x = 8,439.80 × 3,981.60
  4. Step 4: Simplify right side
    5,623.48x = 33,603,907.68
  5. Step 5: Solve for x
    x = 33,603,907.68/5,623.48
  6. Step 6: Final answer
    x = 5,975.64

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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.