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Finding the Fourth Proportional to 1,931.75, 2,897.27 and 760.89

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Solution

The fourth proportional to 1,931.75, 2,897.27 and 760.89 is: 1,141.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.75 : 2,897.27 = 760.89 : x
  2. Step 2: Convert to fraction form
    1,931.75/2,897.27 = 760.89/x
  3. Step 3: Cross multiply
    1,931.75x = 2,897.27 × 760.89
  4. Step 4: Simplify right side
    1,931.75x = 2,204,499.97
  5. Step 5: Solve for x
    x = 2,204,499.97/1,931.75
  6. Step 6: Final answer
    x = 1,141.20

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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.