Home / 8,020.30-12,022.35-3,640.90

Finding the Fourth Proportional to 8,020.30, 12,022.35 and 3,640.90

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Solution

The fourth proportional to 8,020.30, 12,022.35 and 3,640.90 is: 5,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,020.30 : 12,022.35 = 3,640.90 : x
  2. Step 2: Convert to fraction form
    8,020.30/12,022.35 = 3,640.90/x
  3. Step 3: Cross multiply
    8,020.30x = 12,022.35 × 3,640.90
  4. Step 4: Simplify right side
    8,020.30x = 43,772,174.12
  5. Step 5: Solve for x
    x = 43,772,174.12/8,020.30
  6. Step 6: Final answer
    x = 5,457.67

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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.