Home / 3,161.08-4,742.70-1,621

Finding the Fourth Proportional to 3,161.08, 4,742.70 and 1,621

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Solution

The fourth proportional to 3,161.08, 4,742.70 and 1,621 is: 2,432.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.08 : 4,742.70 = 1,621 : x
  2. Step 2: Convert to fraction form
    3,161.08/4,742.70 = 1,621/x
  3. Step 3: Cross multiply
    3,161.08x = 4,742.70 × 1,621
  4. Step 4: Simplify right side
    3,161.08x = 7,687,916.70
  5. Step 5: Solve for x
    x = 7,687,916.70/3,161.08
  6. Step 6: Final answer
    x = 2,432.05

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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.