Home / 3,818.80-5,730.60-3,639.04

Finding the Fourth Proportional to 3,818.80, 5,730.60 and 3,639.04

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Solution

The fourth proportional to 3,818.80, 5,730.60 and 3,639.04 is: 5,460.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.80 : 5,730.60 = 3,639.04 : x
  2. Step 2: Convert to fraction form
    3,818.80/5,730.60 = 3,639.04/x
  3. Step 3: Cross multiply
    3,818.80x = 5,730.60 × 3,639.04
  4. Step 4: Simplify right side
    3,818.80x = 20,853,882.62
  5. Step 5: Solve for x
    x = 20,853,882.62/3,818.80
  6. Step 6: Final answer
    x = 5,460.85

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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.