Home / 8,679.88-13,020.42-3,485.75

Finding the Fourth Proportional to 8,679.88, 13,020.42 and 3,485.75

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Solution

The fourth proportional to 8,679.88, 13,020.42 and 3,485.75 is: 5,228.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.88 : 13,020.42 = 3,485.75 : x
  2. Step 2: Convert to fraction form
    8,679.88/13,020.42 = 3,485.75/x
  3. Step 3: Cross multiply
    8,679.88x = 13,020.42 × 3,485.75
  4. Step 4: Simplify right side
    8,679.88x = 45,385,929.02
  5. Step 5: Solve for x
    x = 45,385,929.02/8,679.88
  6. Step 6: Final answer
    x = 5,228.87

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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.