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Finding the Fourth Proportional to 7,990.60, 11,026.92 and 4,453.96

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Solution

The fourth proportional to 7,990.60, 11,026.92 and 4,453.96 is: 6,146.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.60 : 11,026.92 = 4,453.96 : x
  2. Step 2: Convert to fraction form
    7,990.60/11,026.92 = 4,453.96/x
  3. Step 3: Cross multiply
    7,990.60x = 11,026.92 × 4,453.96
  4. Step 4: Simplify right side
    7,990.60x = 49,113,460.60
  5. Step 5: Solve for x
    x = 49,113,460.60/7,990.60
  6. Step 6: Final answer
    x = 6,146.40

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Double scale
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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.