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Finding the Fourth Proportional to 5,656.40, 8,484.60 and 3,906.80

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Solution

The fourth proportional to 5,656.40, 8,484.60 and 3,906.80 is: 5,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.40 : 8,484.60 = 3,906.80 : x
  2. Step 2: Convert to fraction form
    5,656.40/8,484.60 = 3,906.80/x
  3. Step 3: Cross multiply
    5,656.40x = 8,484.60 × 3,906.80
  4. Step 4: Simplify right side
    5,656.40x = 33,147,635.28
  5. Step 5: Solve for x
    x = 33,147,635.28/5,656.40
  6. Step 6: Final answer
    x = 5,860.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.