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Finding the Fourth Proportional to 5,210.39, 7,811.93 and 2,611.91

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Solution

The fourth proportional to 5,210.39, 7,811.93 and 2,611.91 is: 3,916.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.39 : 7,811.93 = 2,611.91 : x
  2. Step 2: Convert to fraction form
    5,210.39/7,811.93 = 2,611.91/x
  3. Step 3: Cross multiply
    5,210.39x = 7,811.93 × 2,611.91
  4. Step 4: Simplify right side
    5,210.39x = 20,404,025.56
  5. Step 5: Solve for x
    x = 20,404,025.56/5,210.39
  6. Step 6: Final answer
    x = 3,916.03

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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.