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Finding the Fourth Proportional to 9,940.38, 14,904.81 and 4,090.38

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Solution

The fourth proportional to 9,940.38, 14,904.81 and 4,090.38 is: 6,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.38 : 14,904.81 = 4,090.38 : x
  2. Step 2: Convert to fraction form
    9,940.38/14,904.81 = 4,090.38/x
  3. Step 3: Cross multiply
    9,940.38x = 14,904.81 × 4,090.38
  4. Step 4: Simplify right side
    9,940.38x = 60,966,336.73
  5. Step 5: Solve for x
    x = 60,966,336.73/9,940.38
  6. Step 6: Final answer
    x = 6,133.20

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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.