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Finding the Fourth Proportional to 7,497.60, 11,217.60 and 4,905.60

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Solution

The fourth proportional to 7,497.60, 11,217.60 and 4,905.60 is: 7,339.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,497.60 : 11,217.60 = 4,905.60 : x
  2. Step 2: Convert to fraction form
    7,497.60/11,217.60 = 4,905.60/x
  3. Step 3: Cross multiply
    7,497.60x = 11,217.60 × 4,905.60
  4. Step 4: Simplify right side
    7,497.60x = 55,029,058.56
  5. Step 5: Solve for x
    x = 55,029,058.56/7,497.60
  6. Step 6: Final answer
    x = 7,339.56

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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.