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Finding the Fourth Proportional to 7,912.92, 11,870.07 and 2,069.52

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Solution

The fourth proportional to 7,912.92, 11,870.07 and 2,069.52 is: 3,104.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.92 : 11,870.07 = 2,069.52 : x
  2. Step 2: Convert to fraction form
    7,912.92/11,870.07 = 2,069.52/x
  3. Step 3: Cross multiply
    7,912.92x = 11,870.07 × 2,069.52
  4. Step 4: Simplify right side
    7,912.92x = 24,565,347.27
  5. Step 5: Solve for x
    x = 24,565,347.27/7,912.92
  6. Step 6: Final answer
    x = 3,104.46

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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.