Home / 2,382.76-3,574.32-921.79

Finding the Fourth Proportional to 2,382.76, 3,574.32 and 921.79

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Solution

The fourth proportional to 2,382.76, 3,574.32 and 921.79 is: 1,382.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.76 : 3,574.32 = 921.79 : x
  2. Step 2: Convert to fraction form
    2,382.76/3,574.32 = 921.79/x
  3. Step 3: Cross multiply
    2,382.76x = 3,574.32 × 921.79
  4. Step 4: Simplify right side
    2,382.76x = 3,294,772.43
  5. Step 5: Solve for x
    x = 3,294,772.43/2,382.76
  6. Step 6: Final answer
    x = 1,382.75

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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.