Home / 3,205.12-4,807.68-2,658.38

Finding the Fourth Proportional to 3,205.12, 4,807.68 and 2,658.38

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Solution

The fourth proportional to 3,205.12, 4,807.68 and 2,658.38 is: 3,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.12 : 4,807.68 = 2,658.38 : x
  2. Step 2: Convert to fraction form
    3,205.12/4,807.68 = 2,658.38/x
  3. Step 3: Cross multiply
    3,205.12x = 4,807.68 × 2,658.38
  4. Step 4: Simplify right side
    3,205.12x = 12,780,640.36
  5. Step 5: Solve for x
    x = 12,780,640.36/3,205.12
  6. Step 6: Final answer
    x = 3,987.57

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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.