Home / 1,192.68-1,789.56-576.72

Finding the Fourth Proportional to 1,192.68, 1,789.56 and 576.72

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Solution

The fourth proportional to 1,192.68, 1,789.56 and 576.72 is: 865.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.68 : 1,789.56 = 576.72 : x
  2. Step 2: Convert to fraction form
    1,192.68/1,789.56 = 576.72/x
  3. Step 3: Cross multiply
    1,192.68x = 1,789.56 × 576.72
  4. Step 4: Simplify right side
    1,192.68x = 1,032,075.04
  5. Step 5: Solve for x
    x = 1,032,075.04/1,192.68
  6. Step 6: Final answer
    x = 865.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.