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Finding the Fourth Proportional to 7,693.60, 11,540.40 and 4,194.40

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Solution

The fourth proportional to 7,693.60, 11,540.40 and 4,194.40 is: 6,291.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,693.60 : 11,540.40 = 4,194.40 : x
  2. Step 2: Convert to fraction form
    7,693.60/11,540.40 = 4,194.40/x
  3. Step 3: Cross multiply
    7,693.60x = 11,540.40 × 4,194.40
  4. Step 4: Simplify right side
    7,693.60x = 48,405,053.76
  5. Step 5: Solve for x
    x = 48,405,053.76/7,693.60
  6. Step 6: Final answer
    x = 6,291.60

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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.