Home / 3,390.53-5,081.89-1,309.62

Finding the Fourth Proportional to 3,390.53, 5,081.89 and 1,309.62

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Solution

The fourth proportional to 3,390.53, 5,081.89 and 1,309.62 is: 1,962.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.53 : 5,081.89 = 1,309.62 : x
  2. Step 2: Convert to fraction form
    3,390.53/5,081.89 = 1,309.62/x
  3. Step 3: Cross multiply
    3,390.53x = 5,081.89 × 1,309.62
  4. Step 4: Simplify right side
    3,390.53x = 6,655,344.78
  5. Step 5: Solve for x
    x = 6,655,344.78/3,390.53
  6. Step 6: Final answer
    x = 1,962.92

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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.