Home / 1,651.87-2,478.27-921.97

Finding the Fourth Proportional to 1,651.87, 2,478.27 and 921.97

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Solution

The fourth proportional to 1,651.87, 2,478.27 and 921.97 is: 1,383.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.87 : 2,478.27 = 921.97 : x
  2. Step 2: Convert to fraction form
    1,651.87/2,478.27 = 921.97/x
  3. Step 3: Cross multiply
    1,651.87x = 2,478.27 × 921.97
  4. Step 4: Simplify right side
    1,651.87x = 2,284,890.59
  5. Step 5: Solve for x
    x = 2,284,890.59/1,651.87
  6. Step 6: Final answer
    x = 1,383.21

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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.