Home / 5,119.43-7,677.51-1,998.68

Finding the Fourth Proportional to 5,119.43, 7,677.51 and 1,998.68

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Solution

The fourth proportional to 5,119.43, 7,677.51 and 1,998.68 is: 2,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.43 : 7,677.51 = 1,998.68 : x
  2. Step 2: Convert to fraction form
    5,119.43/7,677.51 = 1,998.68/x
  3. Step 3: Cross multiply
    5,119.43x = 7,677.51 × 1,998.68
  4. Step 4: Simplify right side
    5,119.43x = 15,344,885.69
  5. Step 5: Solve for x
    x = 15,344,885.69/5,119.43
  6. Step 6: Final answer
    x = 2,997.38

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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.