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Finding the Fourth Proportional to 8,698.16, 13,049.69 and 2,858.87

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Solution

The fourth proportional to 8,698.16, 13,049.69 and 2,858.87 is: 4,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.16 : 13,049.69 = 2,858.87 : x
  2. Step 2: Convert to fraction form
    8,698.16/13,049.69 = 2,858.87/x
  3. Step 3: Cross multiply
    8,698.16x = 13,049.69 × 2,858.87
  4. Step 4: Simplify right side
    8,698.16x = 37,307,352.96
  5. Step 5: Solve for x
    x = 37,307,352.96/8,698.16
  6. Step 6: Final answer
    x = 4,289.11

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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.