Home / 4,140.78-6,217.30-1,680.40

Finding the Fourth Proportional to 4,140.78, 6,217.30 and 1,680.40

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Solution

The fourth proportional to 4,140.78, 6,217.30 and 1,680.40 is: 2,523.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.78 : 6,217.30 = 1,680.40 : x
  2. Step 2: Convert to fraction form
    4,140.78/6,217.30 = 1,680.40/x
  3. Step 3: Cross multiply
    4,140.78x = 6,217.30 × 1,680.40
  4. Step 4: Simplify right side
    4,140.78x = 10,447,550.92
  5. Step 5: Solve for x
    x = 10,447,550.92/4,140.78
  6. Step 6: Final answer
    x = 2,523.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.