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Finding the Fourth Proportional to 2,918.94, 4,028.04 and 1,739.40

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Solution

The fourth proportional to 2,918.94, 4,028.04 and 1,739.40 is: 2,400.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.94 : 4,028.04 = 1,739.40 : x
  2. Step 2: Convert to fraction form
    2,918.94/4,028.04 = 1,739.40/x
  3. Step 3: Cross multiply
    2,918.94x = 4,028.04 × 1,739.40
  4. Step 4: Simplify right side
    2,918.94x = 7,006,372.78
  5. Step 5: Solve for x
    x = 7,006,372.78/2,918.94
  6. Step 6: Final answer
    x = 2,400.31

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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.