Home / 1,687.20-2,529.58-1,036.56

Finding the Fourth Proportional to 1,687.20, 2,529.58 and 1,036.56

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Solution

The fourth proportional to 1,687.20, 2,529.58 and 1,036.56 is: 1,554.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.20 : 2,529.58 = 1,036.56 : x
  2. Step 2: Convert to fraction form
    1,687.20/2,529.58 = 1,036.56/x
  3. Step 3: Cross multiply
    1,687.20x = 2,529.58 × 1,036.56
  4. Step 4: Simplify right side
    1,687.20x = 2,622,061.44
  5. Step 5: Solve for x
    x = 2,622,061.44/1,687.20
  6. Step 6: Final answer
    x = 1,554.09

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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.