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Finding the Fourth Proportional to 2,685, 4,026.60 and 1,203.30

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Solution

The fourth proportional to 2,685, 4,026.60 and 1,203.30 is: 1,804.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685 : 4,026.60 = 1,203.30 : x
  2. Step 2: Convert to fraction form
    2,685/4,026.60 = 1,203.30/x
  3. Step 3: Cross multiply
    2,685x = 4,026.60 × 1,203.30
  4. Step 4: Simplify right side
    2,685x = 4,845,207.78
  5. Step 5: Solve for x
    x = 4,845,207.78/2,685
  6. Step 6: Final answer
    x = 1,804.55

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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.