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Finding the Fourth Proportional to 2,611.92, 3,602.60 and 1,728.92

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Solution

The fourth proportional to 2,611.92, 3,602.60 and 1,728.92 is: 2,384.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.92 : 3,602.60 = 1,728.92 : x
  2. Step 2: Convert to fraction form
    2,611.92/3,602.60 = 1,728.92/x
  3. Step 3: Cross multiply
    2,611.92x = 3,602.60 × 1,728.92
  4. Step 4: Simplify right side
    2,611.92x = 6,228,607.55
  5. Step 5: Solve for x
    x = 6,228,607.55/2,611.92
  6. Step 6: Final answer
    x = 2,384.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.