Home / 1,687.03-2,529.35-749.46

Finding the Fourth Proportional to 1,687.03, 2,529.35 and 749.46

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Solution

The fourth proportional to 1,687.03, 2,529.35 and 749.46 is: 1,123.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.03 : 2,529.35 = 749.46 : x
  2. Step 2: Convert to fraction form
    1,687.03/2,529.35 = 749.46/x
  3. Step 3: Cross multiply
    1,687.03x = 2,529.35 × 749.46
  4. Step 4: Simplify right side
    1,687.03x = 1,895,646.65
  5. Step 5: Solve for x
    x = 1,895,646.65/1,687.03
  6. Step 6: Final answer
    x = 1,123.66

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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.