Home / 3,219.70-4,443.12-1,783.92

Finding the Fourth Proportional to 3,219.70, 4,443.12 and 1,783.92

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Solution

The fourth proportional to 3,219.70, 4,443.12 and 1,783.92 is: 2,461.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.70 : 4,443.12 = 1,783.92 : x
  2. Step 2: Convert to fraction form
    3,219.70/4,443.12 = 1,783.92/x
  3. Step 3: Cross multiply
    3,219.70x = 4,443.12 × 1,783.92
  4. Step 4: Simplify right side
    3,219.70x = 7,926,177.28
  5. Step 5: Solve for x
    x = 7,926,177.28/3,219.70
  6. Step 6: Final answer
    x = 2,461.78

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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.