Home / 3,219.72-4,443.06-1,977.48

Finding the Fourth Proportional to 3,219.72, 4,443.06 and 1,977.48

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Solution

The fourth proportional to 3,219.72, 4,443.06 and 1,977.48 is: 2,728.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.72 : 4,443.06 = 1,977.48 : x
  2. Step 2: Convert to fraction form
    3,219.72/4,443.06 = 1,977.48/x
  3. Step 3: Cross multiply
    3,219.72x = 4,443.06 × 1,977.48
  4. Step 4: Simplify right side
    3,219.72x = 8,786,062.29
  5. Step 5: Solve for x
    x = 8,786,062.29/3,219.72
  6. Step 6: Final answer
    x = 2,728.83

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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.