Home / 5,915.80-8,164.20-3,398.73

Finding the Fourth Proportional to 5,915.80, 8,164.20 and 3,398.73

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Solution

The fourth proportional to 5,915.80, 8,164.20 and 3,398.73 is: 4,690.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.80 : 8,164.20 = 3,398.73 : x
  2. Step 2: Convert to fraction form
    5,915.80/8,164.20 = 3,398.73/x
  3. Step 3: Cross multiply
    5,915.80x = 8,164.20 × 3,398.73
  4. Step 4: Simplify right side
    5,915.80x = 27,747,911.47
  5. Step 5: Solve for x
    x = 27,747,911.47/5,915.80
  6. Step 6: Final answer
    x = 4,690.47

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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.