Home / 5,778.30-7,972.47-3,680.70

Finding the Fourth Proportional to 5,778.30, 7,972.47 and 3,680.70

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Solution

The fourth proportional to 5,778.30, 7,972.47 and 3,680.70 is: 5,078.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.30 : 7,972.47 = 3,680.70 : x
  2. Step 2: Convert to fraction form
    5,778.30/7,972.47 = 3,680.70/x
  3. Step 3: Cross multiply
    5,778.30x = 7,972.47 × 3,680.70
  4. Step 4: Simplify right side
    5,778.30x = 29,344,270.33
  5. Step 5: Solve for x
    x = 29,344,270.33/5,778.30
  6. Step 6: Final answer
    x = 5,078.36

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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.