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Finding the Fourth Proportional to 8,628.12, 11,907 and 5,090.04

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Solution

The fourth proportional to 8,628.12, 11,907 and 5,090.04 is: 7,024.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.12 : 11,907 = 5,090.04 : x
  2. Step 2: Convert to fraction form
    8,628.12/11,907 = 5,090.04/x
  3. Step 3: Cross multiply
    8,628.12x = 11,907 × 5,090.04
  4. Step 4: Simplify right side
    8,628.12x = 60,607,106.28
  5. Step 5: Solve for x
    x = 60,607,106.28/8,628.12
  6. Step 6: Final answer
    x = 7,024.37

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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.