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Finding the Fourth Proportional to 7,190, 10,785.60 and 1,995.92

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Solution

The fourth proportional to 7,190, 10,785.60 and 1,995.92 is: 2,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190 : 10,785.60 = 1,995.92 : x
  2. Step 2: Convert to fraction form
    7,190/10,785.60 = 1,995.92/x
  3. Step 3: Cross multiply
    7,190x = 10,785.60 × 1,995.92
  4. Step 4: Simplify right side
    7,190x = 21,527,194.75
  5. Step 5: Solve for x
    x = 21,527,194.75/7,190
  6. Step 6: Final answer
    x = 2,994.05

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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.