Home / 5,619.36-8,429.95-2,109.64

Finding the Fourth Proportional to 5,619.36, 8,429.95 and 2,109.64

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Solution

The fourth proportional to 5,619.36, 8,429.95 and 2,109.64 is: 3,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.36 : 8,429.95 = 2,109.64 : x
  2. Step 2: Convert to fraction form
    5,619.36/8,429.95 = 2,109.64/x
  3. Step 3: Cross multiply
    5,619.36x = 8,429.95 × 2,109.64
  4. Step 4: Simplify right side
    5,619.36x = 17,784,157.09
  5. Step 5: Solve for x
    x = 17,784,157.09/5,619.36
  6. Step 6: Final answer
    x = 3,164.80

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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.