Home / 4,890.45-7,319.21-4,485.81

Finding the Fourth Proportional to 4,890.45, 7,319.21 and 4,485.81

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Solution

The fourth proportional to 4,890.45, 7,319.21 and 4,485.81 is: 6,713.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.45 : 7,319.21 = 4,485.81 : x
  2. Step 2: Convert to fraction form
    4,890.45/7,319.21 = 4,485.81/x
  3. Step 3: Cross multiply
    4,890.45x = 7,319.21 × 4,485.81
  4. Step 4: Simplify right side
    4,890.45x = 32,832,562.98
  5. Step 5: Solve for x
    x = 32,832,562.98/4,890.45
  6. Step 6: Final answer
    x = 6,713.61

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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.