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Finding the Fourth Proportional to 4,918.86, 7,371.91 and 1,995.57

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Solution

The fourth proportional to 4,918.86, 7,371.91 and 1,995.57 is: 2,990.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.86 : 7,371.91 = 1,995.57 : x
  2. Step 2: Convert to fraction form
    4,918.86/7,371.91 = 1,995.57/x
  3. Step 3: Cross multiply
    4,918.86x = 7,371.91 × 1,995.57
  4. Step 4: Simplify right side
    4,918.86x = 14,711,164.93
  5. Step 5: Solve for x
    x = 14,711,164.93/4,918.86
  6. Step 6: Final answer
    x = 2,990.77

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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.