Home / 2,155.06-3,225.30-1,333.90

Finding the Fourth Proportional to 2,155.06, 3,225.30 and 1,333.90

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Solution

The fourth proportional to 2,155.06, 3,225.30 and 1,333.90 is: 1,996.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.06 : 3,225.30 = 1,333.90 : x
  2. Step 2: Convert to fraction form
    2,155.06/3,225.30 = 1,333.90/x
  3. Step 3: Cross multiply
    2,155.06x = 3,225.30 × 1,333.90
  4. Step 4: Simplify right side
    2,155.06x = 4,302,227.67
  5. Step 5: Solve for x
    x = 4,302,227.67/2,155.06
  6. Step 6: Final answer
    x = 1,996.34

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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.