Home / 3,658.41-5,488.65-1,992.20

Finding the Fourth Proportional to 3,658.41, 5,488.65 and 1,992.20

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Solution

The fourth proportional to 3,658.41, 5,488.65 and 1,992.20 is: 2,988.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.41 : 5,488.65 = 1,992.20 : x
  2. Step 2: Convert to fraction form
    3,658.41/5,488.65 = 1,992.20/x
  3. Step 3: Cross multiply
    3,658.41x = 5,488.65 × 1,992.20
  4. Step 4: Simplify right side
    3,658.41x = 10,934,461.09
  5. Step 5: Solve for x
    x = 10,934,461.09/3,658.41
  6. Step 6: Final answer
    x = 2,988.86

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1.5x scale

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.