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Finding the Fourth Proportional to 3,972.37, 5,482.03 and 2,179.92

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Solution

The fourth proportional to 3,972.37, 5,482.03 and 2,179.92 is: 3,008.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.37 : 5,482.03 = 2,179.92 : x
  2. Step 2: Convert to fraction form
    3,972.37/5,482.03 = 2,179.92/x
  3. Step 3: Cross multiply
    3,972.37x = 5,482.03 × 2,179.92
  4. Step 4: Simplify right side
    3,972.37x = 11,950,386.84
  5. Step 5: Solve for x
    x = 11,950,386.84/3,972.37
  6. Step 6: Final answer
    x = 3,008.38

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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.