Home / 2,378.63-3,282.28-1,383.89

Finding the Fourth Proportional to 2,378.63, 3,282.28 and 1,383.89

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Solution

The fourth proportional to 2,378.63, 3,282.28 and 1,383.89 is: 1,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.63 : 3,282.28 = 1,383.89 : x
  2. Step 2: Convert to fraction form
    2,378.63/3,282.28 = 1,383.89/x
  3. Step 3: Cross multiply
    2,378.63x = 3,282.28 × 1,383.89
  4. Step 4: Simplify right side
    2,378.63x = 4,542,314.47
  5. Step 5: Solve for x
    x = 4,542,314.47/2,378.63
  6. Step 6: Final answer
    x = 1,909.63

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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.