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Finding the Fourth Proportional to 8,393.35, 12,639.99 and 7,310.79

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Solution

The fourth proportional to 8,393.35, 12,639.99 and 7,310.79 is: 11,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.35 : 12,639.99 = 7,310.79 : x
  2. Step 2: Convert to fraction form
    8,393.35/12,639.99 = 7,310.79/x
  3. Step 3: Cross multiply
    8,393.35x = 12,639.99 × 7,310.79
  4. Step 4: Simplify right side
    8,393.35x = 92,408,312.49
  5. Step 5: Solve for x
    x = 92,408,312.49/8,393.35
  6. Step 6: Final answer
    x = 11,009.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.