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Finding the Fourth Proportional to 3,328.43, 4,992.65 and 1,868.61

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Solution

The fourth proportional to 3,328.43, 4,992.65 and 1,868.61 is: 2,802.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.43 : 4,992.65 = 1,868.61 : x
  2. Step 2: Convert to fraction form
    3,328.43/4,992.65 = 1,868.61/x
  3. Step 3: Cross multiply
    3,328.43x = 4,992.65 × 1,868.61
  4. Step 4: Simplify right side
    3,328.43x = 9,329,320.39
  5. Step 5: Solve for x
    x = 9,329,320.39/3,328.43
  6. Step 6: Final answer
    x = 2,802.92

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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.