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Finding the Fourth Proportional to 9,745.86, 13,450.80 and 6,398.38

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Solution

The fourth proportional to 9,745.86, 13,450.80 and 6,398.38 is: 8,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,745.86 : 13,450.80 = 6,398.38 : x
  2. Step 2: Convert to fraction form
    9,745.86/13,450.80 = 6,398.38/x
  3. Step 3: Cross multiply
    9,745.86x = 13,450.80 × 6,398.38
  4. Step 4: Simplify right side
    9,745.86x = 86,063,322.52
  5. Step 5: Solve for x
    x = 86,063,322.52/9,745.86
  6. Step 6: Final answer
    x = 8,830.76

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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.