Home / 1,663.31-2,295.36-917.27

Finding the Fourth Proportional to 1,663.31, 2,295.36 and 917.27

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Solution

The fourth proportional to 1,663.31, 2,295.36 and 917.27 is: 1,265.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.31 : 2,295.36 = 917.27 : x
  2. Step 2: Convert to fraction form
    1,663.31/2,295.36 = 917.27/x
  3. Step 3: Cross multiply
    1,663.31x = 2,295.36 × 917.27
  4. Step 4: Simplify right side
    1,663.31x = 2,105,464.87
  5. Step 5: Solve for x
    x = 2,105,464.87/1,663.31
  6. Step 6: Final answer
    x = 1,265.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.