Home / 3,168.40-4,745.67-1,780.98

Finding the Fourth Proportional to 3,168.40, 4,745.67 and 1,780.98

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Solution

The fourth proportional to 3,168.40, 4,745.67 and 1,780.98 is: 2,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.40 : 4,745.67 = 1,780.98 : x
  2. Step 2: Convert to fraction form
    3,168.40/4,745.67 = 1,780.98/x
  3. Step 3: Cross multiply
    3,168.40x = 4,745.67 × 1,780.98
  4. Step 4: Simplify right side
    3,168.40x = 8,451,943.36
  5. Step 5: Solve for x
    x = 8,451,943.36/3,168.40
  6. Step 6: Final answer
    x = 2,667.57

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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.