Home / 5,147.41-7,103.79-2,909.49

Finding the Fourth Proportional to 5,147.41, 7,103.79 and 2,909.49

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Solution

The fourth proportional to 5,147.41, 7,103.79 and 2,909.49 is: 4,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.41 : 7,103.79 = 2,909.49 : x
  2. Step 2: Convert to fraction form
    5,147.41/7,103.79 = 2,909.49/x
  3. Step 3: Cross multiply
    5,147.41x = 7,103.79 × 2,909.49
  4. Step 4: Simplify right side
    5,147.41x = 20,668,405.97
  5. Step 5: Solve for x
    x = 20,668,405.97/5,147.41
  6. Step 6: Final answer
    x = 4,015.30

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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.