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Finding the Fourth Proportional to 8,090.15, 12,138.15 and 2,825.94

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Solution

The fourth proportional to 8,090.15, 12,138.15 and 2,825.94 is: 4,239.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,090.15 : 12,138.15 = 2,825.94 : x
  2. Step 2: Convert to fraction form
    8,090.15/12,138.15 = 2,825.94/x
  3. Step 3: Cross multiply
    8,090.15x = 12,138.15 × 2,825.94
  4. Step 4: Simplify right side
    8,090.15x = 34,301,655.55
  5. Step 5: Solve for x
    x = 34,301,655.55/8,090.15
  6. Step 6: Final answer
    x = 4,239.93

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1.5x scale

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.