Home / 3,998.10-5,985.84-2,119.71

Finding the Fourth Proportional to 3,998.10, 5,985.84 and 2,119.71

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Solution

The fourth proportional to 3,998.10, 5,985.84 and 2,119.71 is: 3,173.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.10 : 5,985.84 = 2,119.71 : x
  2. Step 2: Convert to fraction form
    3,998.10/5,985.84 = 2,119.71/x
  3. Step 3: Cross multiply
    3,998.10x = 5,985.84 × 2,119.71
  4. Step 4: Simplify right side
    3,998.10x = 12,688,244.91
  5. Step 5: Solve for x
    x = 12,688,244.91/3,998.10
  6. Step 6: Final answer
    x = 3,173.57

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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.