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Finding the Fourth Proportional to 8,940.88, 13,406.96 and 2,699.72

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Solution

The fourth proportional to 8,940.88, 13,406.96 and 2,699.72 is: 4,048.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.88 : 13,406.96 = 2,699.72 : x
  2. Step 2: Convert to fraction form
    8,940.88/13,406.96 = 2,699.72/x
  3. Step 3: Cross multiply
    8,940.88x = 13,406.96 × 2,699.72
  4. Step 4: Simplify right side
    8,940.88x = 36,195,024.55
  5. Step 5: Solve for x
    x = 36,195,024.55/8,940.88
  6. Step 6: Final answer
    x = 4,048.26

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1.5x scale

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.