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Finding the Fourth Proportional to 8,604.36, 12,897.81 and 5,831.31

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Solution

The fourth proportional to 8,604.36, 12,897.81 and 5,831.31 is: 8,741.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.36 : 12,897.81 = 5,831.31 : x
  2. Step 2: Convert to fraction form
    8,604.36/12,897.81 = 5,831.31/x
  3. Step 3: Cross multiply
    8,604.36x = 12,897.81 × 5,831.31
  4. Step 4: Simplify right side
    8,604.36x = 75,211,128.43
  5. Step 5: Solve for x
    x = 75,211,128.43/8,604.36
  6. Step 6: Final answer
    x = 8,741.05

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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.