Home / 3,178.92-4,385.34-2,000.28

Finding the Fourth Proportional to 3,178.92, 4,385.34 and 2,000.28

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Solution

The fourth proportional to 3,178.92, 4,385.34 and 2,000.28 is: 2,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.92 : 4,385.34 = 2,000.28 : x
  2. Step 2: Convert to fraction form
    3,178.92/4,385.34 = 2,000.28/x
  3. Step 3: Cross multiply
    3,178.92x = 4,385.34 × 2,000.28
  4. Step 4: Simplify right side
    3,178.92x = 8,771,907.90
  5. Step 5: Solve for x
    x = 8,771,907.90/3,178.92
  6. Step 6: Final answer
    x = 2,759.40

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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.