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Finding the Fourth Proportional to 2,611.62, 3,602.11 and 1,903.68

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Solution

The fourth proportional to 2,611.62, 3,602.11 and 1,903.68 is: 2,625.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.62 : 3,602.11 = 1,903.68 : x
  2. Step 2: Convert to fraction form
    2,611.62/3,602.11 = 1,903.68/x
  3. Step 3: Cross multiply
    2,611.62x = 3,602.11 × 1,903.68
  4. Step 4: Simplify right side
    2,611.62x = 6,857,264.76
  5. Step 5: Solve for x
    x = 6,857,264.76/2,611.62
  6. Step 6: Final answer
    x = 2,625.67

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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.