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Finding the Fourth Proportional to 7,861, 10,846.74 and 5,770.12

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Solution

The fourth proportional to 7,861, 10,846.74 and 5,770.12 is: 7,961.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861 : 10,846.74 = 5,770.12 : x
  2. Step 2: Convert to fraction form
    7,861/10,846.74 = 5,770.12/x
  3. Step 3: Cross multiply
    7,861x = 10,846.74 × 5,770.12
  4. Step 4: Simplify right side
    7,861x = 62,586,991.41
  5. Step 5: Solve for x
    x = 62,586,991.41/7,861
  6. Step 6: Final answer
    x = 7,961.71

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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.