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Finding the Fourth Proportional to 8,684.94, 13,014.94 and 4,939.70

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Solution

The fourth proportional to 8,684.94, 13,014.94 and 4,939.70 is: 7,402.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.94 : 13,014.94 = 4,939.70 : x
  2. Step 2: Convert to fraction form
    8,684.94/13,014.94 = 4,939.70/x
  3. Step 3: Cross multiply
    8,684.94x = 13,014.94 × 4,939.70
  4. Step 4: Simplify right side
    8,684.94x = 64,289,899.12
  5. Step 5: Solve for x
    x = 64,289,899.12/8,684.94
  6. Step 6: Final answer
    x = 7,402.46

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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.