Home / 5,451.77-8,181.73-2,120.55

Finding the Fourth Proportional to 5,451.77, 8,181.73 and 2,120.55

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Solution

The fourth proportional to 5,451.77, 8,181.73 and 2,120.55 is: 3,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.77 : 8,181.73 = 2,120.55 : x
  2. Step 2: Convert to fraction form
    5,451.77/8,181.73 = 2,120.55/x
  3. Step 3: Cross multiply
    5,451.77x = 8,181.73 × 2,120.55
  4. Step 4: Simplify right side
    5,451.77x = 17,349,745.48
  5. Step 5: Solve for x
    x = 17,349,745.48/5,451.77
  6. Step 6: Final answer
    x = 3,182.40

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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.