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Finding the Fourth Proportional to 9,368.46, 12,940.97 and 7,621.29

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Solution

The fourth proportional to 9,368.46, 12,940.97 and 7,621.29 is: 10,527.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.46 : 12,940.97 = 7,621.29 : x
  2. Step 2: Convert to fraction form
    9,368.46/12,940.97 = 7,621.29/x
  3. Step 3: Cross multiply
    9,368.46x = 12,940.97 × 7,621.29
  4. Step 4: Simplify right side
    9,368.46x = 98,626,847.14
  5. Step 5: Solve for x
    x = 98,626,847.14/9,368.46
  6. Step 6: Final answer
    x = 10,527.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.