Home / 1,663.28-2,295.29-917.22

Finding the Fourth Proportional to 1,663.28, 2,295.29 and 917.22

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Solution

The fourth proportional to 1,663.28, 2,295.29 and 917.22 is: 1,265.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.28 : 2,295.29 = 917.22 : x
  2. Step 2: Convert to fraction form
    1,663.28/2,295.29 = 917.22/x
  3. Step 3: Cross multiply
    1,663.28x = 2,295.29 × 917.22
  4. Step 4: Simplify right side
    1,663.28x = 2,105,269.83
  5. Step 5: Solve for x
    x = 2,105,269.83/1,663.28
  6. Step 6: Final answer
    x = 1,265.74

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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.