Home / 8,812.87-13,215.42-4,129.10

Finding the Fourth Proportional to 8,812.87, 13,215.42 and 4,129.10

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Solution

The fourth proportional to 8,812.87, 13,215.42 and 4,129.10 is: 6,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.87 : 13,215.42 = 4,129.10 : x
  2. Step 2: Convert to fraction form
    8,812.87/13,215.42 = 4,129.10/x
  3. Step 3: Cross multiply
    8,812.87x = 13,215.42 × 4,129.10
  4. Step 4: Simplify right side
    8,812.87x = 54,567,790.72
  5. Step 5: Solve for x
    x = 54,567,790.72/8,812.87
  6. Step 6: Final answer
    x = 6,191.83

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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.