Home / 2,455.47-3,388.25-1,393.16

Finding the Fourth Proportional to 2,455.47, 3,388.25 and 1,393.16

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Solution

The fourth proportional to 2,455.47, 3,388.25 and 1,393.16 is: 1,922.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.47 : 3,388.25 = 1,393.16 : x
  2. Step 2: Convert to fraction form
    2,455.47/3,388.25 = 1,393.16/x
  3. Step 3: Cross multiply
    2,455.47x = 3,388.25 × 1,393.16
  4. Step 4: Simplify right side
    2,455.47x = 4,720,360.91
  5. Step 5: Solve for x
    x = 4,720,360.91/2,455.47
  6. Step 6: Final answer
    x = 1,922.39

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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.