Home / 5,745.18-8,620.96-3,112.68

Finding the Fourth Proportional to 5,745.18, 8,620.96 and 3,112.68

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Solution

The fourth proportional to 5,745.18, 8,620.96 and 3,112.68 is: 4,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,745.18 : 8,620.96 = 3,112.68 : x
  2. Step 2: Convert to fraction form
    5,745.18/8,620.96 = 3,112.68/x
  3. Step 3: Cross multiply
    5,745.18x = 8,620.96 × 3,112.68
  4. Step 4: Simplify right side
    5,745.18x = 26,834,289.77
  5. Step 5: Solve for x
    x = 26,834,289.77/5,745.18
  6. Step 6: Final answer
    x = 4,670.75

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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.