Home / 2,480.20-3,423.30-1,640.50

Finding the Fourth Proportional to 2,480.20, 3,423.30 and 1,640.50

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Solution

The fourth proportional to 2,480.20, 3,423.30 and 1,640.50 is: 2,264.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.20 : 3,423.30 = 1,640.50 : x
  2. Step 2: Convert to fraction form
    2,480.20/3,423.30 = 1,640.50/x
  3. Step 3: Cross multiply
    2,480.20x = 3,423.30 × 1,640.50
  4. Step 4: Simplify right side
    2,480.20x = 5,615,923.65
  5. Step 5: Solve for x
    x = 5,615,923.65/2,480.20
  6. Step 6: Final answer
    x = 2,264.30

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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.