Home / 3,100.12-4,650.91-1,020.29

Finding the Fourth Proportional to 3,100.12, 4,650.91 and 1,020.29

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Solution

The fourth proportional to 3,100.12, 4,650.91 and 1,020.29 is: 1,530.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.12 : 4,650.91 = 1,020.29 : x
  2. Step 2: Convert to fraction form
    3,100.12/4,650.91 = 1,020.29/x
  3. Step 3: Cross multiply
    3,100.12x = 4,650.91 × 1,020.29
  4. Step 4: Simplify right side
    3,100.12x = 4,745,251.16
  5. Step 5: Solve for x
    x = 4,745,251.16/3,100.12
  6. Step 6: Final answer
    x = 1,530.67

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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.