Home / 1,663.27-2,295.45-917.30

Finding the Fourth Proportional to 1,663.27, 2,295.45 and 917.30

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Solution

The fourth proportional to 1,663.27, 2,295.45 and 917.30 is: 1,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.27 : 2,295.45 = 917.30 : x
  2. Step 2: Convert to fraction form
    1,663.27/2,295.45 = 917.30/x
  3. Step 3: Cross multiply
    1,663.27x = 2,295.45 × 917.30
  4. Step 4: Simplify right side
    1,663.27x = 2,105,616.29
  5. Step 5: Solve for x
    x = 2,105,616.29/1,663.27
  6. Step 6: Final answer
    x = 1,265.95

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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.