Home / 1,717.85-2,371.61-1,187.51

Finding the Fourth Proportional to 1,717.85, 2,371.61 and 1,187.51

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Solution

The fourth proportional to 1,717.85, 2,371.61 and 1,187.51 is: 1,639.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.85 : 2,371.61 = 1,187.51 : x
  2. Step 2: Convert to fraction form
    1,717.85/2,371.61 = 1,187.51/x
  3. Step 3: Cross multiply
    1,717.85x = 2,371.61 × 1,187.51
  4. Step 4: Simplify right side
    1,717.85x = 2,816,304.65
  5. Step 5: Solve for x
    x = 2,816,304.65/1,717.85
  6. Step 6: Final answer
    x = 1,639.44

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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.