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Finding the Fourth Proportional to 2,752.76, 4,129.38 and 903.87

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Solution

The fourth proportional to 2,752.76, 4,129.38 and 903.87 is: 1,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,752.76 : 4,129.38 = 903.87 : x
  2. Step 2: Convert to fraction form
    2,752.76/4,129.38 = 903.87/x
  3. Step 3: Cross multiply
    2,752.76x = 4,129.38 × 903.87
  4. Step 4: Simplify right side
    2,752.76x = 3,732,422.70
  5. Step 5: Solve for x
    x = 3,732,422.70/2,752.76
  6. Step 6: Final answer
    x = 1,355.89

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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.