Home / 3,196.45-4,411.20-1,780.30

Finding the Fourth Proportional to 3,196.45, 4,411.20 and 1,780.30

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Solution

The fourth proportional to 3,196.45, 4,411.20 and 1,780.30 is: 2,456.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,196.45 : 4,411.20 = 1,780.30 : x
  2. Step 2: Convert to fraction form
    3,196.45/4,411.20 = 1,780.30/x
  3. Step 3: Cross multiply
    3,196.45x = 4,411.20 × 1,780.30
  4. Step 4: Simplify right side
    3,196.45x = 7,853,259.36
  5. Step 5: Solve for x
    x = 7,853,259.36/3,196.45
  6. Step 6: Final answer
    x = 2,456.87

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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.