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Finding the Fourth Proportional to 2,752.62, 4,129.36 and 903.31

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Solution

The fourth proportional to 2,752.62, 4,129.36 and 903.31 is: 1,355.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,752.62 : 4,129.36 = 903.31 : x
  2. Step 2: Convert to fraction form
    2,752.62/4,129.36 = 903.31/x
  3. Step 3: Cross multiply
    2,752.62x = 4,129.36 × 903.31
  4. Step 4: Simplify right side
    2,752.62x = 3,730,093.96
  5. Step 5: Solve for x
    x = 3,730,093.96/2,752.62
  6. Step 6: Final answer
    x = 1,355.11

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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.