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Finding the Fourth Proportional to 8,726.90, 13,107.13 and 7,480.31

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Solution

The fourth proportional to 8,726.90, 13,107.13 and 7,480.31 is: 11,234.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.90 : 13,107.13 = 7,480.31 : x
  2. Step 2: Convert to fraction form
    8,726.90/13,107.13 = 7,480.31/x
  3. Step 3: Cross multiply
    8,726.90x = 13,107.13 × 7,480.31
  4. Step 4: Simplify right side
    8,726.90x = 98,045,311.37
  5. Step 5: Solve for x
    x = 98,045,311.37/8,726.90
  6. Step 6: Final answer
    x = 11,234.84

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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.