Home / 2,455.20-3,388.02-1,393.02

Finding the Fourth Proportional to 2,455.20, 3,388.02 and 1,393.02

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Solution

The fourth proportional to 2,455.20, 3,388.02 and 1,393.02 is: 1,922.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.20 : 3,388.02 = 1,393.02 : x
  2. Step 2: Convert to fraction form
    2,455.20/3,388.02 = 1,393.02/x
  3. Step 3: Cross multiply
    2,455.20x = 3,388.02 × 1,393.02
  4. Step 4: Simplify right side
    2,455.20x = 4,719,579.62
  5. Step 5: Solve for x
    x = 4,719,579.62/2,455.20
  6. Step 6: Final answer
    x = 1,922.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.