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Finding the Fourth Proportional to 9,193.69, 12,687.78 and 5,216.08

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Solution

The fourth proportional to 9,193.69, 12,687.78 and 5,216.08 is: 7,198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,193.69 : 12,687.78 = 5,216.08 : x
  2. Step 2: Convert to fraction form
    9,193.69/12,687.78 = 5,216.08/x
  3. Step 3: Cross multiply
    9,193.69x = 12,687.78 × 5,216.08
  4. Step 4: Simplify right side
    9,193.69x = 66,180,385.98
  5. Step 5: Solve for x
    x = 66,180,385.98/9,193.69
  6. Step 6: Final answer
    x = 7,198.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.