Home / 3,378.81-5,065.92-1,187.25

Finding the Fourth Proportional to 3,378.81, 5,065.92 and 1,187.25

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Solution

The fourth proportional to 3,378.81, 5,065.92 and 1,187.25 is: 1,780.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.81 : 5,065.92 = 1,187.25 : x
  2. Step 2: Convert to fraction form
    3,378.81/5,065.92 = 1,187.25/x
  3. Step 3: Cross multiply
    3,378.81x = 5,065.92 × 1,187.25
  4. Step 4: Simplify right side
    3,378.81x = 6,014,513.52
  5. Step 5: Solve for x
    x = 6,014,513.52/3,378.81
  6. Step 6: Final answer
    x = 1,780.07

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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.