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Finding the Fourth Proportional to 5,839.90, 8,060.40 and 3,850.80

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Solution

The fourth proportional to 5,839.90, 8,060.40 and 3,850.80 is: 5,314.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,839.90 : 8,060.40 = 3,850.80 : x
  2. Step 2: Convert to fraction form
    5,839.90/8,060.40 = 3,850.80/x
  3. Step 3: Cross multiply
    5,839.90x = 8,060.40 × 3,850.80
  4. Step 4: Simplify right side
    5,839.90x = 31,038,988.32
  5. Step 5: Solve for x
    x = 31,038,988.32/5,839.90
  6. Step 6: Final answer
    x = 5,314.99

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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.