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Finding the Fourth Proportional to 4,861.08, 7,291.62 and 1,939.41

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Solution

The fourth proportional to 4,861.08, 7,291.62 and 1,939.41 is: 2,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,861.08 : 7,291.62 = 1,939.41 : x
  2. Step 2: Convert to fraction form
    4,861.08/7,291.62 = 1,939.41/x
  3. Step 3: Cross multiply
    4,861.08x = 7,291.62 × 1,939.41
  4. Step 4: Simplify right side
    4,861.08x = 14,141,440.74
  5. Step 5: Solve for x
    x = 14,141,440.74/4,861.08
  6. Step 6: Final answer
    x = 2,909.12

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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.