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Finding the Fourth Proportional to 1,775.28, 2,663.48 and 735.78

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Solution

The fourth proportional to 1,775.28, 2,663.48 and 735.78 is: 1,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.28 : 2,663.48 = 735.78 : x
  2. Step 2: Convert to fraction form
    1,775.28/2,663.48 = 735.78/x
  3. Step 3: Cross multiply
    1,775.28x = 2,663.48 × 735.78
  4. Step 4: Simplify right side
    1,775.28x = 1,959,721.56
  5. Step 5: Solve for x
    x = 1,959,721.56/1,775.28
  6. Step 6: Final answer
    x = 1,103.89

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1.5x scale

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.