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Finding the Fourth Proportional to 8,392.60, 12,638.86 and 7,310.04

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Solution

The fourth proportional to 8,392.60, 12,638.86 and 7,310.04 is: 11,008.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.60 : 12,638.86 = 7,310.04 : x
  2. Step 2: Convert to fraction form
    8,392.60/12,638.86 = 7,310.04/x
  3. Step 3: Cross multiply
    8,392.60x = 12,638.86 × 7,310.04
  4. Step 4: Simplify right side
    8,392.60x = 92,390,572.15
  5. Step 5: Solve for x
    x = 92,390,572.15/8,392.60
  6. Step 6: Final answer
    x = 11,008.58

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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.