Home / 5,209.68-7,814.48-2,129.52

Finding the Fourth Proportional to 5,209.68, 7,814.48 and 2,129.52

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Solution

The fourth proportional to 5,209.68, 7,814.48 and 2,129.52 is: 3,194.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.68 : 7,814.48 = 2,129.52 : x
  2. Step 2: Convert to fraction form
    5,209.68/7,814.48 = 2,129.52/x
  3. Step 3: Cross multiply
    5,209.68x = 7,814.48 × 2,129.52
  4. Step 4: Simplify right side
    5,209.68x = 16,641,091.45
  5. Step 5: Solve for x
    x = 16,641,091.45/5,209.68
  6. Step 6: Final answer
    x = 3,194.26

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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.