Home / 1,555.35-2,331.54-581.19

Finding the Fourth Proportional to 1,555.35, 2,331.54 and 581.19

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Solution

The fourth proportional to 1,555.35, 2,331.54 and 581.19 is: 871.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.35 : 2,331.54 = 581.19 : x
  2. Step 2: Convert to fraction form
    1,555.35/2,331.54 = 581.19/x
  3. Step 3: Cross multiply
    1,555.35x = 2,331.54 × 581.19
  4. Step 4: Simplify right side
    1,555.35x = 1,355,067.73
  5. Step 5: Solve for x
    x = 1,355,067.73/1,555.35
  6. Step 6: Final answer
    x = 871.23

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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.