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Finding the Fourth Proportional to 8,355.66, 12,534.80 and 3,971.63

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Solution

The fourth proportional to 8,355.66, 12,534.80 and 3,971.63 is: 5,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.66 : 12,534.80 = 3,971.63 : x
  2. Step 2: Convert to fraction form
    8,355.66/12,534.80 = 3,971.63/x
  3. Step 3: Cross multiply
    8,355.66x = 12,534.80 × 3,971.63
  4. Step 4: Simplify right side
    8,355.66x = 49,783,621.54
  5. Step 5: Solve for x
    x = 49,783,621.54/8,355.66
  6. Step 6: Final answer
    x = 5,958.07

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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.