Home / 7,145.96-9,861.41-4,163.81

Finding the Fourth Proportional to 7,145.96, 9,861.41 and 4,163.81

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Solution

The fourth proportional to 7,145.96, 9,861.41 and 4,163.81 is: 5,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.96 : 9,861.41 = 4,163.81 : x
  2. Step 2: Convert to fraction form
    7,145.96/9,861.41 = 4,163.81/x
  3. Step 3: Cross multiply
    7,145.96x = 9,861.41 × 4,163.81
  4. Step 4: Simplify right side
    7,145.96x = 41,060,998.67
  5. Step 5: Solve for x
    x = 41,060,998.67/7,145.96
  6. Step 6: Final answer
    x = 5,746.05

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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.