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Finding the Fourth Proportional to 8,635.28, 12,951 and 3,089.00

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Solution

The fourth proportional to 8,635.28, 12,951 and 3,089.00 is: 4,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.28 : 12,951 = 3,089.00 : x
  2. Step 2: Convert to fraction form
    8,635.28/12,951 = 3,089.00/x
  3. Step 3: Cross multiply
    8,635.28x = 12,951 × 3,089.00
  4. Step 4: Simplify right side
    8,635.28x = 40,005,574.25
  5. Step 5: Solve for x
    x = 40,005,574.25/8,635.28
  6. Step 6: Final answer
    x = 4,632.81

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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.