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Finding the Fourth Proportional to 6,313.87, 8,712.93 and 3,481.20

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Solution

The fourth proportional to 6,313.87, 8,712.93 and 3,481.20 is: 4,803.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,313.87 : 8,712.93 = 3,481.20 : x
  2. Step 2: Convert to fraction form
    6,313.87/8,712.93 = 3,481.20/x
  3. Step 3: Cross multiply
    6,313.87x = 8,712.93 × 3,481.20
  4. Step 4: Simplify right side
    6,313.87x = 30,331,438.86
  5. Step 5: Solve for x
    x = 30,331,438.86/6,313.87
  6. Step 6: Final answer
    x = 4,803.94

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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.