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Finding the Fourth Proportional to 7,855.62, 11,783.54 and 2,591.18

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Solution

The fourth proportional to 7,855.62, 11,783.54 and 2,591.18 is: 3,886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.62 : 11,783.54 = 2,591.18 : x
  2. Step 2: Convert to fraction form
    7,855.62/11,783.54 = 2,591.18/x
  3. Step 3: Cross multiply
    7,855.62x = 11,783.54 × 2,591.18
  4. Step 4: Simplify right side
    7,855.62x = 30,533,201.30
  5. Step 5: Solve for x
    x = 30,533,201.30/7,855.62
  6. Step 6: Final answer
    x = 3,886.80

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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.