Home / 5,147.69-7,103.80-2,789.84

Finding the Fourth Proportional to 5,147.69, 7,103.80 and 2,789.84

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Solution

The fourth proportional to 5,147.69, 7,103.80 and 2,789.84 is: 3,849.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.69 : 7,103.80 = 2,789.84 : x
  2. Step 2: Convert to fraction form
    5,147.69/7,103.80 = 2,789.84/x
  3. Step 3: Cross multiply
    5,147.69x = 7,103.80 × 2,789.84
  4. Step 4: Simplify right side
    5,147.69x = 19,818,415.92
  5. Step 5: Solve for x
    x = 19,818,415.92/5,147.69
  6. Step 6: Final answer
    x = 3,849.96

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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.