Home / 5,147.92-7,104.36-2,909.88

Finding the Fourth Proportional to 5,147.92, 7,104.36 and 2,909.88

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Solution

The fourth proportional to 5,147.92, 7,104.36 and 2,909.88 is: 4,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.92 : 7,104.36 = 2,909.88 : x
  2. Step 2: Convert to fraction form
    5,147.92/7,104.36 = 2,909.88/x
  3. Step 3: Cross multiply
    5,147.92x = 7,104.36 × 2,909.88
  4. Step 4: Simplify right side
    5,147.92x = 20,672,835.08
  5. Step 5: Solve for x
    x = 20,672,835.08/5,147.92
  6. Step 6: Final answer
    x = 4,015.76

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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.