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Finding the Fourth Proportional to 7,116.60, 10,674.90 and 3,228.60

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Solution

The fourth proportional to 7,116.60, 10,674.90 and 3,228.60 is: 4,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.60 : 10,674.90 = 3,228.60 : x
  2. Step 2: Convert to fraction form
    7,116.60/10,674.90 = 3,228.60/x
  3. Step 3: Cross multiply
    7,116.60x = 10,674.90 × 3,228.60
  4. Step 4: Simplify right side
    7,116.60x = 34,464,982.14
  5. Step 5: Solve for x
    x = 34,464,982.14/7,116.60
  6. Step 6: Final answer
    x = 4,842.90

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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.