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Finding the Fourth Proportional to 7,861.12, 10,850.65 and 4,676.65

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Solution

The fourth proportional to 7,861.12, 10,850.65 and 4,676.65 is: 6,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.12 : 10,850.65 = 4,676.65 : x
  2. Step 2: Convert to fraction form
    7,861.12/10,850.65 = 4,676.65/x
  3. Step 3: Cross multiply
    7,861.12x = 10,850.65 × 4,676.65
  4. Step 4: Simplify right side
    7,861.12x = 50,744,653.50
  5. Step 5: Solve for x
    x = 50,744,653.50/7,861.12
  6. Step 6: Final answer
    x = 6,455.15

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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.