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Finding the Fourth Proportional to 7,912.13, 10,918.94 and 4,768.52

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Solution

The fourth proportional to 7,912.13, 10,918.94 and 4,768.52 is: 6,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.13 : 10,918.94 = 4,768.52 : x
  2. Step 2: Convert to fraction form
    7,912.13/10,918.94 = 4,768.52/x
  3. Step 3: Cross multiply
    7,912.13x = 10,918.94 × 4,768.52
  4. Step 4: Simplify right side
    7,912.13x = 52,067,105.33
  5. Step 5: Solve for x
    x = 52,067,105.33/7,912.13
  6. Step 6: Final answer
    x = 6,580.67

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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.