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Finding the Fourth Proportional to 2,192.64, 3,288.88 and 653.60

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Solution

The fourth proportional to 2,192.64, 3,288.88 and 653.60 is: 980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.64 : 3,288.88 = 653.60 : x
  2. Step 2: Convert to fraction form
    2,192.64/3,288.88 = 653.60/x
  3. Step 3: Cross multiply
    2,192.64x = 3,288.88 × 653.60
  4. Step 4: Simplify right side
    2,192.64x = 2,149,611.97
  5. Step 5: Solve for x
    x = 2,149,611.97/2,192.64
  6. Step 6: Final answer
    x = 980.38

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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.