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Finding the Fourth Proportional to 8,485.51, 12,732.51 and 3,808.87

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Solution

The fourth proportional to 8,485.51, 12,732.51 and 3,808.87 is: 5,715.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.51 : 12,732.51 = 3,808.87 : x
  2. Step 2: Convert to fraction form
    8,485.51/12,732.51 = 3,808.87/x
  3. Step 3: Cross multiply
    8,485.51x = 12,732.51 × 3,808.87
  4. Step 4: Simplify right side
    8,485.51x = 48,496,475.36
  5. Step 5: Solve for x
    x = 48,496,475.36/8,485.51
  6. Step 6: Final answer
    x = 5,715.21

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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.