Home / 3,178.25-4,385.99-1,936.25

Finding the Fourth Proportional to 3,178.25, 4,385.99 and 1,936.25

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Solution

The fourth proportional to 3,178.25, 4,385.99 and 1,936.25 is: 2,672.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.25 : 4,385.99 = 1,936.25 : x
  2. Step 2: Convert to fraction form
    3,178.25/4,385.99 = 1,936.25/x
  3. Step 3: Cross multiply
    3,178.25x = 4,385.99 × 1,936.25
  4. Step 4: Simplify right side
    3,178.25x = 8,492,363.46
  5. Step 5: Solve for x
    x = 8,492,363.46/3,178.25
  6. Step 6: Final answer
    x = 2,672.03

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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.