Home / 2,431.13-3,355.43-1,383.20

Finding the Fourth Proportional to 2,431.13, 3,355.43 and 1,383.20

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Solution

The fourth proportional to 2,431.13, 3,355.43 and 1,383.20 is: 1,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.13 : 3,355.43 = 1,383.20 : x
  2. Step 2: Convert to fraction form
    2,431.13/3,355.43 = 1,383.20/x
  3. Step 3: Cross multiply
    2,431.13x = 3,355.43 × 1,383.20
  4. Step 4: Simplify right side
    2,431.13x = 4,641,207.08
  5. Step 5: Solve for x
    x = 4,641,207.08/2,431.13
  6. Step 6: Final answer
    x = 1,909.08

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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.