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Finding the Fourth Proportional to 2,703.58, 4,053.85 and 855.16

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Solution

The fourth proportional to 2,703.58, 4,053.85 and 855.16 is: 1,282.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,703.58 : 4,053.85 = 855.16 : x
  2. Step 2: Convert to fraction form
    2,703.58/4,053.85 = 855.16/x
  3. Step 3: Cross multiply
    2,703.58x = 4,053.85 × 855.16
  4. Step 4: Simplify right side
    2,703.58x = 3,466,678.09
  5. Step 5: Solve for x
    x = 3,466,678.09/2,703.58
  6. Step 6: Final answer
    x = 1,282.26

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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.