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Finding the Fourth Proportional to 7,903.71, 10,912.32 and 4,923.72

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Solution

The fourth proportional to 7,903.71, 10,912.32 and 4,923.72 is: 6,797.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.71 : 10,912.32 = 4,923.72 : x
  2. Step 2: Convert to fraction form
    7,903.71/10,912.32 = 4,923.72/x
  3. Step 3: Cross multiply
    7,903.71x = 10,912.32 × 4,923.72
  4. Step 4: Simplify right side
    7,903.71x = 53,729,208.23
  5. Step 5: Solve for x
    x = 53,729,208.23/7,903.71
  6. Step 6: Final answer
    x = 6,797.97

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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.