Home / 5,105.61-7,654.79-1,982.98

Finding the Fourth Proportional to 5,105.61, 7,654.79 and 1,982.98

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Solution

The fourth proportional to 5,105.61, 7,654.79 and 1,982.98 is: 2,973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.61 : 7,654.79 = 1,982.98 : x
  2. Step 2: Convert to fraction form
    5,105.61/7,654.79 = 1,982.98/x
  3. Step 3: Cross multiply
    5,105.61x = 7,654.79 × 1,982.98
  4. Step 4: Simplify right side
    5,105.61x = 15,179,295.47
  5. Step 5: Solve for x
    x = 15,179,295.47/5,105.61
  6. Step 6: Final answer
    x = 2,973.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.