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Finding the Fourth Proportional to 5,811, 8,716.50 and 1,707

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Solution

The fourth proportional to 5,811, 8,716.50 and 1,707 is: 2,560.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811 : 8,716.50 = 1,707 : x
  2. Step 2: Convert to fraction form
    5,811/8,716.50 = 1,707/x
  3. Step 3: Cross multiply
    5,811x = 8,716.50 × 1,707
  4. Step 4: Simplify right side
    5,811x = 14,879,065.50
  5. Step 5: Solve for x
    x = 14,879,065.50/5,811
  6. Step 6: Final answer
    x = 2,560.50

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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.