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Finding the Fourth Proportional to 8,712, 12,032.46 and 5,912.64

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Solution

The fourth proportional to 8,712, 12,032.46 and 5,912.64 is: 8,166.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712 : 12,032.46 = 5,912.64 : x
  2. Step 2: Convert to fraction form
    8,712/12,032.46 = 5,912.64/x
  3. Step 3: Cross multiply
    8,712x = 12,032.46 × 5,912.64
  4. Step 4: Simplify right side
    8,712x = 71,143,604.29
  5. Step 5: Solve for x
    x = 71,143,604.29/8,712
  6. Step 6: Final answer
    x = 8,166.16

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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.