Home / 5,249.13-7,873.57-2,128.30

Finding the Fourth Proportional to 5,249.13, 7,873.57 and 2,128.30

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Solution

The fourth proportional to 5,249.13, 7,873.57 and 2,128.30 is: 3,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.13 : 7,873.57 = 2,128.30 : x
  2. Step 2: Convert to fraction form
    5,249.13/7,873.57 = 2,128.30/x
  3. Step 3: Cross multiply
    5,249.13x = 7,873.57 × 2,128.30
  4. Step 4: Simplify right side
    5,249.13x = 16,757,319.03
  5. Step 5: Solve for x
    x = 16,757,319.03/5,249.13
  6. Step 6: Final answer
    x = 3,192.40

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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.