Home / 6,986.85-10,480.30-6,636.47

Finding the Fourth Proportional to 6,986.85, 10,480.30 and 6,636.47

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Solution

The fourth proportional to 6,986.85, 10,480.30 and 6,636.47 is: 9,954.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.85 : 10,480.30 = 6,636.47 : x
  2. Step 2: Convert to fraction form
    6,986.85/10,480.30 = 6,636.47/x
  3. Step 3: Cross multiply
    6,986.85x = 10,480.30 × 6,636.47
  4. Step 4: Simplify right side
    6,986.85x = 69,552,163.36
  5. Step 5: Solve for x
    x = 69,552,163.36/6,986.85
  6. Step 6: Final answer
    x = 9,954.73

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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.