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Finding the Fourth Proportional to 5,313.89, 7,971.03 and 2,713.79

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Solution

The fourth proportional to 5,313.89, 7,971.03 and 2,713.79 is: 4,070.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,313.89 : 7,971.03 = 2,713.79 : x
  2. Step 2: Convert to fraction form
    5,313.89/7,971.03 = 2,713.79/x
  3. Step 3: Cross multiply
    5,313.89x = 7,971.03 × 2,713.79
  4. Step 4: Simplify right side
    5,313.89x = 21,631,661.65
  5. Step 5: Solve for x
    x = 21,631,661.65/5,313.89
  6. Step 6: Final answer
    x = 4,070.78

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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.