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Finding the Fourth Proportional to 7,562.80, 11,321.80 and 5,623.60

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Solution

The fourth proportional to 7,562.80, 11,321.80 and 5,623.60 is: 8,418.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,562.80 : 11,321.80 = 5,623.60 : x
  2. Step 2: Convert to fraction form
    7,562.80/11,321.80 = 5,623.60/x
  3. Step 3: Cross multiply
    7,562.80x = 11,321.80 × 5,623.60
  4. Step 4: Simplify right side
    7,562.80x = 63,669,274.48
  5. Step 5: Solve for x
    x = 63,669,274.48/7,562.80
  6. Step 6: Final answer
    x = 8,418.74

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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.