Home / 4,654.44-6,420.78-3,142.80

Finding the Fourth Proportional to 4,654.44, 6,420.78 and 3,142.80

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Solution

The fourth proportional to 4,654.44, 6,420.78 and 3,142.80 is: 4,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,654.44 : 6,420.78 = 3,142.80 : x
  2. Step 2: Convert to fraction form
    4,654.44/6,420.78 = 3,142.80/x
  3. Step 3: Cross multiply
    4,654.44x = 6,420.78 × 3,142.80
  4. Step 4: Simplify right side
    4,654.44x = 20,179,227.38
  5. Step 5: Solve for x
    x = 20,179,227.38/4,654.44
  6. Step 6: Final answer
    x = 4,335.48

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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.