Home / 3,619.38-5,429.21-1,247.45

Finding the Fourth Proportional to 3,619.38, 5,429.21 and 1,247.45

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Solution

The fourth proportional to 3,619.38, 5,429.21 and 1,247.45 is: 1,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.38 : 5,429.21 = 1,247.45 : x
  2. Step 2: Convert to fraction form
    3,619.38/5,429.21 = 1,247.45/x
  3. Step 3: Cross multiply
    3,619.38x = 5,429.21 × 1,247.45
  4. Step 4: Simplify right side
    3,619.38x = 6,772,665.17
  5. Step 5: Solve for x
    x = 6,772,665.17/3,619.38
  6. Step 6: Final answer
    x = 1,871.22

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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.