Home / 3,815.80-5,262.91-3,285.59

Finding the Fourth Proportional to 3,815.80, 5,262.91 and 3,285.59

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Solution

The fourth proportional to 3,815.80, 5,262.91 and 3,285.59 is: 4,531.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.80 : 5,262.91 = 3,285.59 : x
  2. Step 2: Convert to fraction form
    3,815.80/5,262.91 = 3,285.59/x
  3. Step 3: Cross multiply
    3,815.80x = 5,262.91 × 3,285.59
  4. Step 4: Simplify right side
    3,815.80x = 17,291,729.94
  5. Step 5: Solve for x
    x = 17,291,729.94/3,815.80
  6. Step 6: Final answer
    x = 4,531.62

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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.