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Finding the Fourth Proportional to 3,910.95, 5,866.47 and 1,830.67

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Solution

The fourth proportional to 3,910.95, 5,866.47 and 1,830.67 is: 2,746.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.95 : 5,866.47 = 1,830.67 : x
  2. Step 2: Convert to fraction form
    3,910.95/5,866.47 = 1,830.67/x
  3. Step 3: Cross multiply
    3,910.95x = 5,866.47 × 1,830.67
  4. Step 4: Simplify right side
    3,910.95x = 10,739,555.97
  5. Step 5: Solve for x
    x = 10,739,555.97/3,910.95
  6. Step 6: Final answer
    x = 2,746.02

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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.