Home / 7,163.09-9,885.15-3,976.45

Finding the Fourth Proportional to 7,163.09, 9,885.15 and 3,976.45

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Solution

The fourth proportional to 7,163.09, 9,885.15 and 3,976.45 is: 5,487.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.09 : 9,885.15 = 3,976.45 : x
  2. Step 2: Convert to fraction form
    7,163.09/9,885.15 = 3,976.45/x
  3. Step 3: Cross multiply
    7,163.09x = 9,885.15 × 3,976.45
  4. Step 4: Simplify right side
    7,163.09x = 39,307,804.72
  5. Step 5: Solve for x
    x = 39,307,804.72/7,163.09
  6. Step 6: Final answer
    x = 5,487.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.