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Finding the Fourth Proportional to 5,810.92, 8,716.24 and 1,428.36

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Solution

The fourth proportional to 5,810.92, 8,716.24 and 1,428.36 is: 2,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,810.92 : 8,716.24 = 1,428.36 : x
  2. Step 2: Convert to fraction form
    5,810.92/8,716.24 = 1,428.36/x
  3. Step 3: Cross multiply
    5,810.92x = 8,716.24 × 1,428.36
  4. Step 4: Simplify right side
    5,810.92x = 12,449,928.57
  5. Step 5: Solve for x
    x = 12,449,928.57/5,810.92
  6. Step 6: Final answer
    x = 2,142.51

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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.