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Finding the Fourth Proportional to 7,447.60, 11,147.10 and 5,795.20

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Solution

The fourth proportional to 7,447.60, 11,147.10 and 5,795.20 is: 8,673.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.60 : 11,147.10 = 5,795.20 : x
  2. Step 2: Convert to fraction form
    7,447.60/11,147.10 = 5,795.20/x
  3. Step 3: Cross multiply
    7,447.60x = 11,147.10 × 5,795.20
  4. Step 4: Simplify right side
    7,447.60x = 64,599,673.92
  5. Step 5: Solve for x
    x = 64,599,673.92/7,447.60
  6. Step 6: Final answer
    x = 8,673.89

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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.