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Finding the Fourth Proportional to 1,863.76, 2,795.64 and 767.52

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Solution

The fourth proportional to 1,863.76, 2,795.64 and 767.52 is: 1,151.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.76 : 2,795.64 = 767.52 : x
  2. Step 2: Convert to fraction form
    1,863.76/2,795.64 = 767.52/x
  3. Step 3: Cross multiply
    1,863.76x = 2,795.64 × 767.52
  4. Step 4: Simplify right side
    1,863.76x = 2,145,712.76
  5. Step 5: Solve for x
    x = 2,145,712.76/1,863.76
  6. Step 6: Final answer
    x = 1,151.28

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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.