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Finding the Fourth Proportional to 6,313.54, 8,706.78 and 4,990.41

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Solution

The fourth proportional to 6,313.54, 8,706.78 and 4,990.41 is: 6,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,313.54 : 8,706.78 = 4,990.41 : x
  2. Step 2: Convert to fraction form
    6,313.54/8,706.78 = 4,990.41/x
  3. Step 3: Cross multiply
    6,313.54x = 8,706.78 × 4,990.41
  4. Step 4: Simplify right side
    6,313.54x = 43,450,401.98
  5. Step 5: Solve for x
    x = 43,450,401.98/6,313.54
  6. Step 6: Final answer
    x = 6,882.10

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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.