Home / 8,664.40-12,996.60-3,117.93

Finding the Fourth Proportional to 8,664.40, 12,996.60 and 3,117.93

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Solution

The fourth proportional to 8,664.40, 12,996.60 and 3,117.93 is: 4,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.40 : 12,996.60 = 3,117.93 : x
  2. Step 2: Convert to fraction form
    8,664.40/12,996.60 = 3,117.93/x
  3. Step 3: Cross multiply
    8,664.40x = 12,996.60 × 3,117.93
  4. Step 4: Simplify right side
    8,664.40x = 40,522,489.04
  5. Step 5: Solve for x
    x = 40,522,489.04/8,664.40
  6. Step 6: Final answer
    x = 4,676.90

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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.