Home / 2,680.80-4,018.68-1,381.92

Finding the Fourth Proportional to 2,680.80, 4,018.68 and 1,381.92

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Solution

The fourth proportional to 2,680.80, 4,018.68 and 1,381.92 is: 2,071.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.80 : 4,018.68 = 1,381.92 : x
  2. Step 2: Convert to fraction form
    2,680.80/4,018.68 = 1,381.92/x
  3. Step 3: Cross multiply
    2,680.80x = 4,018.68 × 1,381.92
  4. Step 4: Simplify right side
    2,680.80x = 5,553,494.27
  5. Step 5: Solve for x
    x = 5,553,494.27/2,680.80
  6. Step 6: Final answer
    x = 2,071.58

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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.