Home / 8,609.24-12,914.58-3,989.72

Finding the Fourth Proportional to 8,609.24, 12,914.58 and 3,989.72

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Solution

The fourth proportional to 8,609.24, 12,914.58 and 3,989.72 is: 5,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.24 : 12,914.58 = 3,989.72 : x
  2. Step 2: Convert to fraction form
    8,609.24/12,914.58 = 3,989.72/x
  3. Step 3: Cross multiply
    8,609.24x = 12,914.58 × 3,989.72
  4. Step 4: Simplify right side
    8,609.24x = 51,525,558.12
  5. Step 5: Solve for x
    x = 51,525,558.12/8,609.24
  6. Step 6: Final answer
    x = 5,984.91

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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.