Home / 5,170.42-7,751.85-1,658.43

Finding the Fourth Proportional to 5,170.42, 7,751.85 and 1,658.43

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Solution

The fourth proportional to 5,170.42, 7,751.85 and 1,658.43 is: 2,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.42 : 7,751.85 = 1,658.43 : x
  2. Step 2: Convert to fraction form
    5,170.42/7,751.85 = 1,658.43/x
  3. Step 3: Cross multiply
    5,170.42x = 7,751.85 × 1,658.43
  4. Step 4: Simplify right side
    5,170.42x = 12,855,853.54
  5. Step 5: Solve for x
    x = 12,855,853.54/5,170.42
  6. Step 6: Final answer
    x = 2,486.43

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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.