Home / 4,679.78-6,456.36-2,791.40

Finding the Fourth Proportional to 4,679.78, 6,456.36 and 2,791.40

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Solution

The fourth proportional to 4,679.78, 6,456.36 and 2,791.40 is: 3,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.78 : 6,456.36 = 2,791.40 : x
  2. Step 2: Convert to fraction form
    4,679.78/6,456.36 = 2,791.40/x
  3. Step 3: Cross multiply
    4,679.78x = 6,456.36 × 2,791.40
  4. Step 4: Simplify right side
    4,679.78x = 18,022,283.30
  5. Step 5: Solve for x
    x = 18,022,283.30/4,679.78
  6. Step 6: Final answer
    x = 3,851.10

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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.