Home / 3,986.23-5,495.82-2,658.91

Finding the Fourth Proportional to 3,986.23, 5,495.82 and 2,658.91

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Solution

The fourth proportional to 3,986.23, 5,495.82 and 2,658.91 is: 3,665.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.23 : 5,495.82 = 2,658.91 : x
  2. Step 2: Convert to fraction form
    3,986.23/5,495.82 = 2,658.91/x
  3. Step 3: Cross multiply
    3,986.23x = 5,495.82 × 2,658.91
  4. Step 4: Simplify right side
    3,986.23x = 14,612,890.76
  5. Step 5: Solve for x
    x = 14,612,890.76/3,986.23
  6. Step 6: Final answer
    x = 3,665.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.