Home / 8,021.78-11,069.87-4,485.32

Finding the Fourth Proportional to 8,021.78, 11,069.87 and 4,485.32

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Solution

The fourth proportional to 8,021.78, 11,069.87 and 4,485.32 is: 6,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,021.78 : 11,069.87 = 4,485.32 : x
  2. Step 2: Convert to fraction form
    8,021.78/11,069.87 = 4,485.32/x
  3. Step 3: Cross multiply
    8,021.78x = 11,069.87 × 4,485.32
  4. Step 4: Simplify right side
    8,021.78x = 49,651,948.20
  5. Step 5: Solve for x
    x = 49,651,948.20/8,021.78
  6. Step 6: Final answer
    x = 6,189.64

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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.