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Finding the Fourth Proportional to 3,951.86, 5,929.81 and 1,762.02

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Solution

The fourth proportional to 3,951.86, 5,929.81 and 1,762.02 is: 2,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.86 : 5,929.81 = 1,762.02 : x
  2. Step 2: Convert to fraction form
    3,951.86/5,929.81 = 1,762.02/x
  3. Step 3: Cross multiply
    3,951.86x = 5,929.81 × 1,762.02
  4. Step 4: Simplify right side
    3,951.86x = 10,448,439.41
  5. Step 5: Solve for x
    x = 10,448,439.41/3,951.86
  6. Step 6: Final answer
    x = 2,643.93

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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.