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Finding the Fourth Proportional to 8,315.81, 12,463.70 and 3,633.81

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Solution

The fourth proportional to 8,315.81, 12,463.70 and 3,633.81 is: 5,446.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.81 : 12,463.70 = 3,633.81 : x
  2. Step 2: Convert to fraction form
    8,315.81/12,463.70 = 3,633.81/x
  3. Step 3: Cross multiply
    8,315.81x = 12,463.70 × 3,633.81
  4. Step 4: Simplify right side
    8,315.81x = 45,290,699.53
  5. Step 5: Solve for x
    x = 45,290,699.53/8,315.81
  6. Step 6: Final answer
    x = 5,446.34

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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.