Home / 8,986.08-13,485.29-3,142.70

Finding the Fourth Proportional to 8,986.08, 13,485.29 and 3,142.70

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Solution

The fourth proportional to 8,986.08, 13,485.29 and 3,142.70 is: 4,716.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.08 : 13,485.29 = 3,142.70 : x
  2. Step 2: Convert to fraction form
    8,986.08/13,485.29 = 3,142.70/x
  3. Step 3: Cross multiply
    8,986.08x = 13,485.29 × 3,142.70
  4. Step 4: Simplify right side
    8,986.08x = 42,380,220.88
  5. Step 5: Solve for x
    x = 42,380,220.88/8,986.08
  6. Step 6: Final answer
    x = 4,716.21

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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.