Home / 3,747.47-5,619.81-1,281.62

Finding the Fourth Proportional to 3,747.47, 5,619.81 and 1,281.62

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Solution

The fourth proportional to 3,747.47, 5,619.81 and 1,281.62 is: 1,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.47 : 5,619.81 = 1,281.62 : x
  2. Step 2: Convert to fraction form
    3,747.47/5,619.81 = 1,281.62/x
  3. Step 3: Cross multiply
    3,747.47x = 5,619.81 × 1,281.62
  4. Step 4: Simplify right side
    3,747.47x = 7,202,479.75
  5. Step 5: Solve for x
    x = 7,202,479.75/3,747.47
  6. Step 6: Final answer
    x = 1,921.96

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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.