Home / 5,455.60-8,181.78-1,992.04

Finding the Fourth Proportional to 5,455.60, 8,181.78 and 1,992.04

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Solution

The fourth proportional to 5,455.60, 8,181.78 and 1,992.04 is: 2,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.60 : 8,181.78 = 1,992.04 : x
  2. Step 2: Convert to fraction form
    5,455.60/8,181.78 = 1,992.04/x
  3. Step 3: Cross multiply
    5,455.60x = 8,181.78 × 1,992.04
  4. Step 4: Simplify right side
    5,455.60x = 16,298,433.03
  5. Step 5: Solve for x
    x = 16,298,433.03/5,455.60
  6. Step 6: Final answer
    x = 2,987.47

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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.