Home / 3,579.28-5,368.88-1,387.60

Finding the Fourth Proportional to 3,579.28, 5,368.88 and 1,387.60

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Solution

The fourth proportional to 3,579.28, 5,368.88 and 1,387.60 is: 2,081.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.28 : 5,368.88 = 1,387.60 : x
  2. Step 2: Convert to fraction form
    3,579.28/5,368.88 = 1,387.60/x
  3. Step 3: Cross multiply
    3,579.28x = 5,368.88 × 1,387.60
  4. Step 4: Simplify right side
    3,579.28x = 7,449,857.89
  5. Step 5: Solve for x
    x = 7,449,857.89/3,579.28
  6. Step 6: Final answer
    x = 2,081.38

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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.