Home / 5,455.48-8,186.88-2,169.28

Finding the Fourth Proportional to 5,455.48, 8,186.88 and 2,169.28

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Solution

The fourth proportional to 5,455.48, 8,186.88 and 2,169.28 is: 3,255.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.48 : 8,186.88 = 2,169.28 : x
  2. Step 2: Convert to fraction form
    5,455.48/8,186.88 = 2,169.28/x
  3. Step 3: Cross multiply
    5,455.48x = 8,186.88 × 2,169.28
  4. Step 4: Simplify right side
    5,455.48x = 17,759,635.05
  5. Step 5: Solve for x
    x = 17,759,635.05/5,455.48
  6. Step 6: Final answer
    x = 3,255.38

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1.5x scale

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.