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Finding the Fourth Proportional to 8,636.66, 11,918.44 and 5,100.20

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Solution

The fourth proportional to 8,636.66, 11,918.44 and 5,100.20 is: 7,038.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.66 : 11,918.44 = 5,100.20 : x
  2. Step 2: Convert to fraction form
    8,636.66/11,918.44 = 5,100.20/x
  3. Step 3: Cross multiply
    8,636.66x = 11,918.44 × 5,100.20
  4. Step 4: Simplify right side
    8,636.66x = 60,786,427.69
  5. Step 5: Solve for x
    x = 60,786,427.69/8,636.66
  6. Step 6: Final answer
    x = 7,038.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.