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Finding the Fourth Proportional to 4,920.59, 7,379.29 and 1,632.80

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Solution

The fourth proportional to 4,920.59, 7,379.29 and 1,632.80 is: 2,448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.59 : 7,379.29 = 1,632.80 : x
  2. Step 2: Convert to fraction form
    4,920.59/7,379.29 = 1,632.80/x
  3. Step 3: Cross multiply
    4,920.59x = 7,379.29 × 1,632.80
  4. Step 4: Simplify right side
    4,920.59x = 12,048,863.73
  5. Step 5: Solve for x
    x = 12,048,863.73/4,920.59
  6. Step 6: Final answer
    x = 2,448.66

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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.