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Finding the Fourth Proportional to 8,358.34, 12,476.72 and 7,979.26

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Solution

The fourth proportional to 8,358.34, 12,476.72 and 7,979.26 is: 11,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.34 : 12,476.72 = 7,979.26 : x
  2. Step 2: Convert to fraction form
    8,358.34/12,476.72 = 7,979.26/x
  3. Step 3: Cross multiply
    8,358.34x = 12,476.72 × 7,979.26
  4. Step 4: Simplify right side
    8,358.34x = 99,554,992.83
  5. Step 5: Solve for x
    x = 99,554,992.83/8,358.34
  6. Step 6: Final answer
    x = 11,910.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.