Home / 3,972.87-5,482.60-2,180.35

Finding the Fourth Proportional to 3,972.87, 5,482.60 and 2,180.35

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Solution

The fourth proportional to 3,972.87, 5,482.60 and 2,180.35 is: 3,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.87 : 5,482.60 = 2,180.35 : x
  2. Step 2: Convert to fraction form
    3,972.87/5,482.60 = 2,180.35/x
  3. Step 3: Cross multiply
    3,972.87x = 5,482.60 × 2,180.35
  4. Step 4: Simplify right side
    3,972.87x = 11,953,986.91
  5. Step 5: Solve for x
    x = 11,953,986.91/3,972.87
  6. Step 6: Final answer
    x = 3,008.90

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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.