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Finding the Fourth Proportional to 8,798.32, 13,215.85 and 7,481.87

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Solution

The fourth proportional to 8,798.32, 13,215.85 and 7,481.87 is: 11,238.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.32 : 13,215.85 = 7,481.87 : x
  2. Step 2: Convert to fraction form
    8,798.32/13,215.85 = 7,481.87/x
  3. Step 3: Cross multiply
    8,798.32x = 13,215.85 × 7,481.87
  4. Step 4: Simplify right side
    8,798.32x = 98,879,271.64
  5. Step 5: Solve for x
    x = 98,879,271.64/8,798.32
  6. Step 6: Final answer
    x = 11,238.43

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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.