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Finding the Fourth Proportional to 1,773.92, 2,661.84 and 1,265.12

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Solution

The fourth proportional to 1,773.92, 2,661.84 and 1,265.12 is: 1,898.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,773.92 : 2,661.84 = 1,265.12 : x
  2. Step 2: Convert to fraction form
    1,773.92/2,661.84 = 1,265.12/x
  3. Step 3: Cross multiply
    1,773.92x = 2,661.84 × 1,265.12
  4. Step 4: Simplify right side
    1,773.92x = 3,367,547.02
  5. Step 5: Solve for x
    x = 3,367,547.02/1,773.92
  6. Step 6: Final answer
    x = 1,898.36

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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.