Home / 6,290.20-8,681.58-3,639.22

Finding the Fourth Proportional to 6,290.20, 8,681.58 and 3,639.22

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Solution

The fourth proportional to 6,290.20, 8,681.58 and 3,639.22 is: 5,022.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,290.20 : 8,681.58 = 3,639.22 : x
  2. Step 2: Convert to fraction form
    6,290.20/8,681.58 = 3,639.22/x
  3. Step 3: Cross multiply
    6,290.20x = 8,681.58 × 3,639.22
  4. Step 4: Simplify right side
    6,290.20x = 31,594,179.57
  5. Step 5: Solve for x
    x = 31,594,179.57/6,290.20
  6. Step 6: Final answer
    x = 5,022.76

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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.