Home / 5,147.61-7,103.68-2,789.74

Finding the Fourth Proportional to 5,147.61, 7,103.68 and 2,789.74

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Solution

The fourth proportional to 5,147.61, 7,103.68 and 2,789.74 is: 3,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.61 : 7,103.68 = 2,789.74 : x
  2. Step 2: Convert to fraction form
    5,147.61/7,103.68 = 2,789.74/x
  3. Step 3: Cross multiply
    5,147.61x = 7,103.68 × 2,789.74
  4. Step 4: Simplify right side
    5,147.61x = 19,817,420.24
  5. Step 5: Solve for x
    x = 19,817,420.24/5,147.61
  6. Step 6: Final answer
    x = 3,849.83

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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.