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Finding the Fourth Proportional to 2,179.01, 3,009.93 and 1,712.79

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Solution

The fourth proportional to 2,179.01, 3,009.93 and 1,712.79 is: 2,365.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.01 : 3,009.93 = 1,712.79 : x
  2. Step 2: Convert to fraction form
    2,179.01/3,009.93 = 1,712.79/x
  3. Step 3: Cross multiply
    2,179.01x = 3,009.93 × 1,712.79
  4. Step 4: Simplify right side
    2,179.01x = 5,155,371.58
  5. Step 5: Solve for x
    x = 5,155,371.58/2,179.01
  6. Step 6: Final answer
    x = 2,365.92

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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.