Home / 1,679.29-2,318.43-1,112.61

Finding the Fourth Proportional to 1,679.29, 2,318.43 and 1,112.61

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Solution

The fourth proportional to 1,679.29, 2,318.43 and 1,112.61 is: 1,536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.29 : 2,318.43 = 1,112.61 : x
  2. Step 2: Convert to fraction form
    1,679.29/2,318.43 = 1,112.61/x
  3. Step 3: Cross multiply
    1,679.29x = 2,318.43 × 1,112.61
  4. Step 4: Simplify right side
    1,679.29x = 2,579,502.91
  5. Step 5: Solve for x
    x = 2,579,502.91/1,679.29
  6. Step 6: Final answer
    x = 1,536.07

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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.