Home / 2,720.50-4,078.68-1,402.83

Finding the Fourth Proportional to 2,720.50, 4,078.68 and 1,402.83

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Solution

The fourth proportional to 2,720.50, 4,078.68 and 1,402.83 is: 2,103.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.50 : 4,078.68 = 1,402.83 : x
  2. Step 2: Convert to fraction form
    2,720.50/4,078.68 = 1,402.83/x
  3. Step 3: Cross multiply
    2,720.50x = 4,078.68 × 1,402.83
  4. Step 4: Simplify right side
    2,720.50x = 5,721,694.66
  5. Step 5: Solve for x
    x = 5,721,694.66/2,720.50
  6. Step 6: Final answer
    x = 2,103.18

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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.