Home / 7,128.19-10,692.73-2,745.67

Finding the Fourth Proportional to 7,128.19, 10,692.73 and 2,745.67

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Solution

The fourth proportional to 7,128.19, 10,692.73 and 2,745.67 is: 4,118.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.19 : 10,692.73 = 2,745.67 : x
  2. Step 2: Convert to fraction form
    7,128.19/10,692.73 = 2,745.67/x
  3. Step 3: Cross multiply
    7,128.19x = 10,692.73 × 2,745.67
  4. Step 4: Simplify right side
    7,128.19x = 29,358,707.98
  5. Step 5: Solve for x
    x = 29,358,707.98/7,128.19
  6. Step 6: Final answer
    x = 4,118.68

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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.