Home / 5,618.90-8,429.43-2,155.88

Finding the Fourth Proportional to 5,618.90, 8,429.43 and 2,155.88

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Solution

The fourth proportional to 5,618.90, 8,429.43 and 2,155.88 is: 3,234.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.90 : 8,429.43 = 2,155.88 : x
  2. Step 2: Convert to fraction form
    5,618.90/8,429.43 = 2,155.88/x
  3. Step 3: Cross multiply
    5,618.90x = 8,429.43 × 2,155.88
  4. Step 4: Simplify right side
    5,618.90x = 18,172,797.40
  5. Step 5: Solve for x
    x = 18,172,797.40/5,618.90
  6. Step 6: Final answer
    x = 3,234.23

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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.