Home / 5,209.73-7,189.56-2,851.87

Finding the Fourth Proportional to 5,209.73, 7,189.56 and 2,851.87

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Solution

The fourth proportional to 5,209.73, 7,189.56 and 2,851.87 is: 3,935.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.73 : 7,189.56 = 2,851.87 : x
  2. Step 2: Convert to fraction form
    5,209.73/7,189.56 = 2,851.87/x
  3. Step 3: Cross multiply
    5,209.73x = 7,189.56 × 2,851.87
  4. Step 4: Simplify right side
    5,209.73x = 20,503,640.27
  5. Step 5: Solve for x
    x = 20,503,640.27/5,209.73
  6. Step 6: Final answer
    x = 3,935.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.