Home / 1,725.36-2,586.31-892.78

Finding the Fourth Proportional to 1,725.36, 2,586.31 and 892.78

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Solution

The fourth proportional to 1,725.36, 2,586.31 and 892.78 is: 1,338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.36 : 2,586.31 = 892.78 : x
  2. Step 2: Convert to fraction form
    1,725.36/2,586.31 = 892.78/x
  3. Step 3: Cross multiply
    1,725.36x = 2,586.31 × 892.78
  4. Step 4: Simplify right side
    1,725.36x = 2,309,002.17
  5. Step 5: Solve for x
    x = 2,309,002.17/1,725.36
  6. Step 6: Final answer
    x = 1,338.28

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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.