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Finding the Fourth Proportional to 8,359.43, 12,521.18 and 7,868.79

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Solution

The fourth proportional to 8,359.43, 12,521.18 and 7,868.79 is: 11,786.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,359.43 : 12,521.18 = 7,868.79 : x
  2. Step 2: Convert to fraction form
    8,359.43/12,521.18 = 7,868.79/x
  3. Step 3: Cross multiply
    8,359.43x = 12,521.18 × 7,868.79
  4. Step 4: Simplify right side
    8,359.43x = 98,526,555.64
  5. Step 5: Solve for x
    x = 98,526,555.64/8,359.43
  6. Step 6: Final answer
    x = 11,786.28

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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.