Home / 3,001.88-4,136.87-2,161.10

Finding the Fourth Proportional to 3,001.88, 4,136.87 and 2,161.10

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Solution

The fourth proportional to 3,001.88, 4,136.87 and 2,161.10 is: 2,978.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.88 : 4,136.87 = 2,161.10 : x
  2. Step 2: Convert to fraction form
    3,001.88/4,136.87 = 2,161.10/x
  3. Step 3: Cross multiply
    3,001.88x = 4,136.87 × 2,161.10
  4. Step 4: Simplify right side
    3,001.88x = 8,940,178.95
  5. Step 5: Solve for x
    x = 8,940,178.95/3,001.88
  6. Step 6: Final answer
    x = 2,978.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.