Home / 3,972.45-5,482.08-2,180.01

Finding the Fourth Proportional to 3,972.45, 5,482.08 and 2,180.01

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Solution

The fourth proportional to 3,972.45, 5,482.08 and 2,180.01 is: 3,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.45 : 5,482.08 = 2,180.01 : x
  2. Step 2: Convert to fraction form
    3,972.45/5,482.08 = 2,180.01/x
  3. Step 3: Cross multiply
    3,972.45x = 5,482.08 × 2,180.01
  4. Step 4: Simplify right side
    3,972.45x = 11,950,989.22
  5. Step 5: Solve for x
    x = 11,950,989.22/3,972.45
  6. Step 6: Final answer
    x = 3,008.47

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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.