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Finding the Fourth Proportional to 6,308.28, 8,705.48 and 4,074.30

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Solution

The fourth proportional to 6,308.28, 8,705.48 and 4,074.30 is: 5,622.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,308.28 : 8,705.48 = 4,074.30 : x
  2. Step 2: Convert to fraction form
    6,308.28/8,705.48 = 4,074.30/x
  3. Step 3: Cross multiply
    6,308.28x = 8,705.48 × 4,074.30
  4. Step 4: Simplify right side
    6,308.28x = 35,468,716.79
  5. Step 5: Solve for x
    x = 35,468,716.79/6,308.28
  6. Step 6: Final answer
    x = 5,622.57

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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.