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Finding the Fourth Proportional to 5,166.68, 7,745.47 and 1,879.20

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Solution

The fourth proportional to 5,166.68, 7,745.47 and 1,879.20 is: 2,817.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.68 : 7,745.47 = 1,879.20 : x
  2. Step 2: Convert to fraction form
    5,166.68/7,745.47 = 1,879.20/x
  3. Step 3: Cross multiply
    5,166.68x = 7,745.47 × 1,879.20
  4. Step 4: Simplify right side
    5,166.68x = 14,555,239.10
  5. Step 5: Solve for x
    x = 14,555,239.10/5,166.68
  6. Step 6: Final answer
    x = 2,817.14

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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.