Home / 2,155.56-3,232.67-1,428.99

Finding the Fourth Proportional to 2,155.56, 3,232.67 and 1,428.99

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Solution

The fourth proportional to 2,155.56, 3,232.67 and 1,428.99 is: 2,143.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.56 : 3,232.67 = 1,428.99 : x
  2. Step 2: Convert to fraction form
    2,155.56/3,232.67 = 1,428.99/x
  3. Step 3: Cross multiply
    2,155.56x = 3,232.67 × 1,428.99
  4. Step 4: Simplify right side
    2,155.56x = 4,619,445.96
  5. Step 5: Solve for x
    x = 4,619,445.96/2,155.56
  6. Step 6: Final answer
    x = 2,143.04

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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.