Home / 2,179.20-3,250.08-1,971.84

Finding the Fourth Proportional to 2,179.20, 3,250.08 and 1,971.84

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Solution

The fourth proportional to 2,179.20, 3,250.08 and 1,971.84 is: 2,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.20 : 3,250.08 = 1,971.84 : x
  2. Step 2: Convert to fraction form
    2,179.20/3,250.08 = 1,971.84/x
  3. Step 3: Cross multiply
    2,179.20x = 3,250.08 × 1,971.84
  4. Step 4: Simplify right side
    2,179.20x = 6,408,637.75
  5. Step 5: Solve for x
    x = 6,408,637.75/2,179.20
  6. Step 6: Final answer
    x = 2,940.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.