Home / 5,778.30-7,976.10-3,420.44

Finding the Fourth Proportional to 5,778.30, 7,976.10 and 3,420.44

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Solution

The fourth proportional to 5,778.30, 7,976.10 and 3,420.44 is: 4,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.30 : 7,976.10 = 3,420.44 : x
  2. Step 2: Convert to fraction form
    5,778.30/7,976.10 = 3,420.44/x
  3. Step 3: Cross multiply
    5,778.30x = 7,976.10 × 3,420.44
  4. Step 4: Simplify right side
    5,778.30x = 27,281,771.48
  5. Step 5: Solve for x
    x = 27,281,771.48/5,778.30
  6. Step 6: Final answer
    x = 4,721.42

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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.