Home / 1,189.06-1,637.17-1,079.71

Finding the Fourth Proportional to 1,189.06, 1,637.17 and 1,079.71

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Solution

The fourth proportional to 1,189.06, 1,637.17 and 1,079.71 is: 1,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.06 : 1,637.17 = 1,079.71 : x
  2. Step 2: Convert to fraction form
    1,189.06/1,637.17 = 1,079.71/x
  3. Step 3: Cross multiply
    1,189.06x = 1,637.17 × 1,079.71
  4. Step 4: Simplify right side
    1,189.06x = 1,767,662.03
  5. Step 5: Solve for x
    x = 1,767,662.03/1,189.06
  6. Step 6: Final answer
    x = 1,486.61

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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.