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Finding the Fourth Proportional to 8,324.79, 12,487.91 and 3,394.77

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Solution

The fourth proportional to 8,324.79, 12,487.91 and 3,394.77 is: 5,092.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,324.79 : 12,487.91 = 3,394.77 : x
  2. Step 2: Convert to fraction form
    8,324.79/12,487.91 = 3,394.77/x
  3. Step 3: Cross multiply
    8,324.79x = 12,487.91 × 3,394.77
  4. Step 4: Simplify right side
    8,324.79x = 42,393,565.26
  5. Step 5: Solve for x
    x = 42,393,565.26/8,324.79
  6. Step 6: Final answer
    x = 5,092.45

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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.