Home / 2,918.97-4,029.64-1,857.80

Finding the Fourth Proportional to 2,918.97, 4,029.64 and 1,857.80

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Solution

The fourth proportional to 2,918.97, 4,029.64 and 1,857.80 is: 2,564.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.97 : 4,029.64 = 1,857.80 : x
  2. Step 2: Convert to fraction form
    2,918.97/4,029.64 = 1,857.80/x
  3. Step 3: Cross multiply
    2,918.97x = 4,029.64 × 1,857.80
  4. Step 4: Simplify right side
    2,918.97x = 7,486,245.04
  5. Step 5: Solve for x
    x = 7,486,245.04/2,918.97
  6. Step 6: Final answer
    x = 2,564.69

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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.