Home / 8,391.10-12,636.60-7,308.54

Finding the Fourth Proportional to 8,391.10, 12,636.60 and 7,308.54

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Solution

The fourth proportional to 8,391.10, 12,636.60 and 7,308.54 is: 11,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.10 : 12,636.60 = 7,308.54 : x
  2. Step 2: Convert to fraction form
    8,391.10/12,636.60 = 7,308.54/x
  3. Step 3: Cross multiply
    8,391.10x = 12,636.60 × 7,308.54
  4. Step 4: Simplify right side
    8,391.10x = 92,354,996.84
  5. Step 5: Solve for x
    x = 92,354,996.84/8,391.10
  6. Step 6: Final answer
    x = 11,006.30

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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.