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Finding the Fourth Proportional to 7,811.44, 11,705.04 and 4,880.92

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Solution

The fourth proportional to 7,811.44, 11,705.04 and 4,880.92 is: 7,313.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.44 : 11,705.04 = 4,880.92 : x
  2. Step 2: Convert to fraction form
    7,811.44/11,705.04 = 4,880.92/x
  3. Step 3: Cross multiply
    7,811.44x = 11,705.04 × 4,880.92
  4. Step 4: Simplify right side
    7,811.44x = 57,131,363.84
  5. Step 5: Solve for x
    x = 57,131,363.84/7,811.44
  6. Step 6: Final answer
    x = 7,313.81

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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.