Home / 2,383.20-3,288.95-1,388.43

Finding the Fourth Proportional to 2,383.20, 3,288.95 and 1,388.43

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Solution

The fourth proportional to 2,383.20, 3,288.95 and 1,388.43 is: 1,916.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,383.20 : 3,288.95 = 1,388.43 : x
  2. Step 2: Convert to fraction form
    2,383.20/3,288.95 = 1,388.43/x
  3. Step 3: Cross multiply
    2,383.20x = 3,288.95 × 1,388.43
  4. Step 4: Simplify right side
    2,383.20x = 4,566,469.91
  5. Step 5: Solve for x
    x = 4,566,469.91/2,383.20
  6. Step 6: Final answer
    x = 1,916.11

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1.5x scale

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.