Home / 1,987.92-2,744.36-1,857.04

Finding the Fourth Proportional to 1,987.92, 2,744.36 and 1,857.04

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Solution

The fourth proportional to 1,987.92, 2,744.36 and 1,857.04 is: 2,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.92 : 2,744.36 = 1,857.04 : x
  2. Step 2: Convert to fraction form
    1,987.92/2,744.36 = 1,857.04/x
  3. Step 3: Cross multiply
    1,987.92x = 2,744.36 × 1,857.04
  4. Step 4: Simplify right side
    1,987.92x = 5,096,386.29
  5. Step 5: Solve for x
    x = 5,096,386.29/1,987.92
  6. Step 6: Final answer
    x = 2,563.68

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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.