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Finding the Fourth Proportional to 3,798.54, 5,242.10 and 2,119.89

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Solution

The fourth proportional to 3,798.54, 5,242.10 and 2,119.89 is: 2,925.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.54 : 5,242.10 = 2,119.89 : x
  2. Step 2: Convert to fraction form
    3,798.54/5,242.10 = 2,119.89/x
  3. Step 3: Cross multiply
    3,798.54x = 5,242.10 × 2,119.89
  4. Step 4: Simplify right side
    3,798.54x = 11,112,664.77
  5. Step 5: Solve for x
    x = 11,112,664.77/3,798.54
  6. Step 6: Final answer
    x = 2,925.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.