Home / 2,382.20-3,573.80-921.77

Finding the Fourth Proportional to 2,382.20, 3,573.80 and 921.77

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Solution

The fourth proportional to 2,382.20, 3,573.80 and 921.77 is: 1,382.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.20 : 3,573.80 = 921.77 : x
  2. Step 2: Convert to fraction form
    2,382.20/3,573.80 = 921.77/x
  3. Step 3: Cross multiply
    2,382.20x = 3,573.80 × 921.77
  4. Step 4: Simplify right side
    2,382.20x = 3,294,221.63
  5. Step 5: Solve for x
    x = 3,294,221.63/2,382.20
  6. Step 6: Final answer
    x = 1,382.85

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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.