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Finding the Fourth Proportional to 7,635.60, 11,442.60 and 5,645.70

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Solution

The fourth proportional to 7,635.60, 11,442.60 and 5,645.70 is: 8,460.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,635.60 : 11,442.60 = 5,645.70 : x
  2. Step 2: Convert to fraction form
    7,635.60/11,442.60 = 5,645.70/x
  3. Step 3: Cross multiply
    7,635.60x = 11,442.60 × 5,645.70
  4. Step 4: Simplify right side
    7,635.60x = 64,601,486.82
  5. Step 5: Solve for x
    x = 64,601,486.82/7,635.60
  6. Step 6: Final answer
    x = 8,460.56

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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.