Home / 5,189.57-7,781.21-2,070.06

Finding the Fourth Proportional to 5,189.57, 7,781.21 and 2,070.06

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Solution

The fourth proportional to 5,189.57, 7,781.21 and 2,070.06 is: 3,103.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.57 : 7,781.21 = 2,070.06 : x
  2. Step 2: Convert to fraction form
    5,189.57/7,781.21 = 2,070.06/x
  3. Step 3: Cross multiply
    5,189.57x = 7,781.21 × 2,070.06
  4. Step 4: Simplify right side
    5,189.57x = 16,107,571.57
  5. Step 5: Solve for x
    x = 16,107,571.57/5,189.57
  6. Step 6: Final answer
    x = 3,103.84

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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.