Home / 8,090.78-12,135.35-2,543.96

Finding the Fourth Proportional to 8,090.78, 12,135.35 and 2,543.96

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Solution

The fourth proportional to 8,090.78, 12,135.35 and 2,543.96 is: 3,815.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,090.78 : 12,135.35 = 2,543.96 : x
  2. Step 2: Convert to fraction form
    8,090.78/12,135.35 = 2,543.96/x
  3. Step 3: Cross multiply
    8,090.78x = 12,135.35 × 2,543.96
  4. Step 4: Simplify right side
    8,090.78x = 30,871,771.59
  5. Step 5: Solve for x
    x = 30,871,771.59/8,090.78
  6. Step 6: Final answer
    x = 3,815.68

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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.