Home / 1,335.56-2,005.39-1,190.67

Finding the Fourth Proportional to 1,335.56, 2,005.39 and 1,190.67

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Solution

The fourth proportional to 1,335.56, 2,005.39 and 1,190.67 is: 1,787.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.56 : 2,005.39 = 1,190.67 : x
  2. Step 2: Convert to fraction form
    1,335.56/2,005.39 = 1,190.67/x
  3. Step 3: Cross multiply
    1,335.56x = 2,005.39 × 1,190.67
  4. Step 4: Simplify right side
    1,335.56x = 2,387,744.98
  5. Step 5: Solve for x
    x = 2,387,744.98/1,335.56
  6. Step 6: Final answer
    x = 1,787.83

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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.