Home / 7,173.55-9,899.47-3,986.83

Finding the Fourth Proportional to 7,173.55, 9,899.47 and 3,986.83

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Solution

The fourth proportional to 7,173.55, 9,899.47 and 3,986.83 is: 5,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.55 : 9,899.47 = 3,986.83 : x
  2. Step 2: Convert to fraction form
    7,173.55/9,899.47 = 3,986.83/x
  3. Step 3: Cross multiply
    7,173.55x = 9,899.47 × 3,986.83
  4. Step 4: Simplify right side
    7,173.55x = 39,467,503.98
  5. Step 5: Solve for x
    x = 39,467,503.98/7,173.55
  6. Step 6: Final answer
    x = 5,501.81

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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.