Home / 3,619.08-5,428.32-1,671.28

Finding the Fourth Proportional to 3,619.08, 5,428.32 and 1,671.28

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Solution

The fourth proportional to 3,619.08, 5,428.32 and 1,671.28 is: 2,506.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.08 : 5,428.32 = 1,671.28 : x
  2. Step 2: Convert to fraction form
    3,619.08/5,428.32 = 1,671.28/x
  3. Step 3: Cross multiply
    3,619.08x = 5,428.32 × 1,671.28
  4. Step 4: Simplify right side
    3,619.08x = 9,072,253.35
  5. Step 5: Solve for x
    x = 9,072,253.35/3,619.08
  6. Step 6: Final answer
    x = 2,506.78

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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.