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Finding the Fourth Proportional to 9,264.70, 12,794.79 and 7,147.90

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Solution

The fourth proportional to 9,264.70, 12,794.79 and 7,147.90 is: 9,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,264.70 : 12,794.79 = 7,147.90 : x
  2. Step 2: Convert to fraction form
    9,264.70/12,794.79 = 7,147.90/x
  3. Step 3: Cross multiply
    9,264.70x = 12,794.79 × 7,147.90
  4. Step 4: Simplify right side
    9,264.70x = 91,455,879.44
  5. Step 5: Solve for x
    x = 91,455,879.44/9,264.70
  6. Step 6: Final answer
    x = 9,871.43

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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.