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Finding the Fourth Proportional to 7,912.06, 10,914.04 and 5,117.56

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Solution

The fourth proportional to 7,912.06, 10,914.04 and 5,117.56 is: 7,059.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.06 : 10,914.04 = 5,117.56 : x
  2. Step 2: Convert to fraction form
    7,912.06/10,914.04 = 5,117.56/x
  3. Step 3: Cross multiply
    7,912.06x = 10,914.04 × 5,117.56
  4. Step 4: Simplify right side
    7,912.06x = 55,853,254.54
  5. Step 5: Solve for x
    x = 55,853,254.54/7,912.06
  6. Step 6: Final answer
    x = 7,059.26

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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.