Home / 1,383.08-2,073.90-409.05

Finding the Fourth Proportional to 1,383.08, 2,073.90 and 409.05

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Solution

The fourth proportional to 1,383.08, 2,073.90 and 409.05 is: 613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.08 : 2,073.90 = 409.05 : x
  2. Step 2: Convert to fraction form
    1,383.08/2,073.90 = 409.05/x
  3. Step 3: Cross multiply
    1,383.08x = 2,073.90 × 409.05
  4. Step 4: Simplify right side
    1,383.08x = 848,328.80
  5. Step 5: Solve for x
    x = 848,328.80/1,383.08
  6. Step 6: Final answer
    x = 613.36

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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.