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Finding the Fourth Proportional to 8,759.86, 13,150.19 and 6,912.30

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Solution

The fourth proportional to 8,759.86, 13,150.19 and 6,912.30 is: 10,376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.86 : 13,150.19 = 6,912.30 : x
  2. Step 2: Convert to fraction form
    8,759.86/13,150.19 = 6,912.30/x
  3. Step 3: Cross multiply
    8,759.86x = 13,150.19 × 6,912.30
  4. Step 4: Simplify right side
    8,759.86x = 90,898,058.34
  5. Step 5: Solve for x
    x = 90,898,058.34/8,759.86
  6. Step 6: Final answer
    x = 10,376.66

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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.