Home / 1,658.17-2,487.26-789.85

Finding the Fourth Proportional to 1,658.17, 2,487.26 and 789.85

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Solution

The fourth proportional to 1,658.17, 2,487.26 and 789.85 is: 1,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.17 : 2,487.26 = 789.85 : x
  2. Step 2: Convert to fraction form
    1,658.17/2,487.26 = 789.85/x
  3. Step 3: Cross multiply
    1,658.17x = 2,487.26 × 789.85
  4. Step 4: Simplify right side
    1,658.17x = 1,964,558.07
  5. Step 5: Solve for x
    x = 1,964,558.07/1,658.17
  6. Step 6: Final answer
    x = 1,184.78

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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.