Home / 5,407.46-8,111.58-2,120.54

Finding the Fourth Proportional to 5,407.46, 8,111.58 and 2,120.54

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Solution

The fourth proportional to 5,407.46, 8,111.58 and 2,120.54 is: 3,180.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.46 : 8,111.58 = 2,120.54 : x
  2. Step 2: Convert to fraction form
    5,407.46/8,111.58 = 2,120.54/x
  3. Step 3: Cross multiply
    5,407.46x = 8,111.58 × 2,120.54
  4. Step 4: Simplify right side
    5,407.46x = 17,200,929.85
  5. Step 5: Solve for x
    x = 17,200,929.85/5,407.46
  6. Step 6: Final answer
    x = 3,180.96

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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.