Home / 3,821.50-5,273.75-2,165.50

Finding the Fourth Proportional to 3,821.50, 5,273.75 and 2,165.50

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Solution

The fourth proportional to 3,821.50, 5,273.75 and 2,165.50 is: 2,988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.50 : 5,273.75 = 2,165.50 : x
  2. Step 2: Convert to fraction form
    3,821.50/5,273.75 = 2,165.50/x
  3. Step 3: Cross multiply
    3,821.50x = 5,273.75 × 2,165.50
  4. Step 4: Simplify right side
    3,821.50x = 11,420,305.63
  5. Step 5: Solve for x
    x = 11,420,305.63/3,821.50
  6. Step 6: Final answer
    x = 2,988.44

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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.