Home / 2,155.24-3,232.86-1,720.36

Finding the Fourth Proportional to 2,155.24, 3,232.86 and 1,720.36

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Solution

The fourth proportional to 2,155.24, 3,232.86 and 1,720.36 is: 2,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.24 : 3,232.86 = 1,720.36 : x
  2. Step 2: Convert to fraction form
    2,155.24/3,232.86 = 1,720.36/x
  3. Step 3: Cross multiply
    2,155.24x = 3,232.86 × 1,720.36
  4. Step 4: Simplify right side
    2,155.24x = 5,561,683.03
  5. Step 5: Solve for x
    x = 5,561,683.03/2,155.24
  6. Step 6: Final answer
    x = 2,580.54

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Similar ratio
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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.