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Finding the Fourth Proportional to 8,798.74, 13,198.12 and 7,420.94

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Solution

The fourth proportional to 8,798.74, 13,198.12 and 7,420.94 is: 11,131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.74 : 13,198.12 = 7,420.94 : x
  2. Step 2: Convert to fraction form
    8,798.74/13,198.12 = 7,420.94/x
  3. Step 3: Cross multiply
    8,798.74x = 13,198.12 × 7,420.94
  4. Step 4: Simplify right side
    8,798.74x = 97,942,456.63
  5. Step 5: Solve for x
    x = 97,942,456.63/8,798.74
  6. Step 6: Final answer
    x = 11,131.42

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1.5x scale

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.