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Finding the Fourth Proportional to 7,873.92, 11,812.58 and 3,927.30

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Solution

The fourth proportional to 7,873.92, 11,812.58 and 3,927.30 is: 5,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.92 : 11,812.58 = 3,927.30 : x
  2. Step 2: Convert to fraction form
    7,873.92/11,812.58 = 3,927.30/x
  3. Step 3: Cross multiply
    7,873.92x = 11,812.58 × 3,927.30
  4. Step 4: Simplify right side
    7,873.92x = 46,391,525.80
  5. Step 5: Solve for x
    x = 46,391,525.80/7,873.92
  6. Step 6: Final answer
    x = 5,891.80

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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.