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Finding the Fourth Proportional to 1,675.36, 2,512.80 and 854.23

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Solution

The fourth proportional to 1,675.36, 2,512.80 and 854.23 is: 1,281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.36 : 2,512.80 = 854.23 : x
  2. Step 2: Convert to fraction form
    1,675.36/2,512.80 = 854.23/x
  3. Step 3: Cross multiply
    1,675.36x = 2,512.80 × 854.23
  4. Step 4: Simplify right side
    1,675.36x = 2,146,509.14
  5. Step 5: Solve for x
    x = 2,146,509.14/1,675.36
  6. Step 6: Final answer
    x = 1,281.22

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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.