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Finding the Fourth Proportional to 2,409.86, 3,620.88 and 2,312.66

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Solution

The fourth proportional to 2,409.86, 3,620.88 and 2,312.66 is: 3,474.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,409.86 : 3,620.88 = 2,312.66 : x
  2. Step 2: Convert to fraction form
    2,409.86/3,620.88 = 2,312.66/x
  3. Step 3: Cross multiply
    2,409.86x = 3,620.88 × 2,312.66
  4. Step 4: Simplify right side
    2,409.86x = 8,373,864.34
  5. Step 5: Solve for x
    x = 8,373,864.34/2,409.86
  6. Step 6: Final answer
    x = 3,474.83

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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.