Home / 3,128.41-4,688.97-1,827.15

Finding the Fourth Proportional to 3,128.41, 4,688.97 and 1,827.15

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Solution

The fourth proportional to 3,128.41, 4,688.97 and 1,827.15 is: 2,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.41 : 4,688.97 = 1,827.15 : x
  2. Step 2: Convert to fraction form
    3,128.41/4,688.97 = 1,827.15/x
  3. Step 3: Cross multiply
    3,128.41x = 4,688.97 × 1,827.15
  4. Step 4: Simplify right side
    3,128.41x = 8,567,451.54
  5. Step 5: Solve for x
    x = 8,567,451.54/3,128.41
  6. Step 6: Final answer
    x = 2,738.60

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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.