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Finding the Fourth Proportional to 8,313.74, 12,470.37 and 2,157.74

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Solution

The fourth proportional to 8,313.74, 12,470.37 and 2,157.74 is: 3,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.74 : 12,470.37 = 2,157.74 : x
  2. Step 2: Convert to fraction form
    8,313.74/12,470.37 = 2,157.74/x
  3. Step 3: Cross multiply
    8,313.74x = 12,470.37 × 2,157.74
  4. Step 4: Simplify right side
    8,313.74x = 26,907,816.16
  5. Step 5: Solve for x
    x = 26,907,816.16/8,313.74
  6. Step 6: Final answer
    x = 3,236.55

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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.