Home / 2,680.08-4,020.12-949.20

Finding the Fourth Proportional to 2,680.08, 4,020.12 and 949.20

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Solution

The fourth proportional to 2,680.08, 4,020.12 and 949.20 is: 1,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.08 : 4,020.12 = 949.20 : x
  2. Step 2: Convert to fraction form
    2,680.08/4,020.12 = 949.20/x
  3. Step 3: Cross multiply
    2,680.08x = 4,020.12 × 949.20
  4. Step 4: Simplify right side
    2,680.08x = 3,815,897.90
  5. Step 5: Solve for x
    x = 3,815,897.90/2,680.08
  6. Step 6: Final answer
    x = 1,423.80

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1.5x scale

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.