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Finding the Fourth Proportional to 9,138.65, 13,696.92 and 4,451.63

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Solution

The fourth proportional to 9,138.65, 13,696.92 and 4,451.63 is: 6,672.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.65 : 13,696.92 = 4,451.63 : x
  2. Step 2: Convert to fraction form
    9,138.65/13,696.92 = 4,451.63/x
  3. Step 3: Cross multiply
    9,138.65x = 13,696.92 × 4,451.63
  4. Step 4: Simplify right side
    9,138.65x = 60,973,551.50
  5. Step 5: Solve for x
    x = 60,973,551.50/9,138.65
  6. Step 6: Final answer
    x = 6,672.06

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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.